![{
str = new char[right.length() + 1];
strcpy(str, right.getValue());
len = right.length();
}
// The following constructor initializes the
// MyString object with a C-string
MyString(char *sptr)
{
len = strlen(sptr);
str = new char[len + 1];
strcpy(str, sptr);
}
// this is a destructor
~MyString()
{
if (len != 0)
delete [] str;
}
// Here is the length function which returns the string length.
int length() const
{
return len;
}
// The getValue function which returns the string.
const char *getValue() const
{
return str;
};
// here are overloaded operators
const MyString operator+=(MyString &);
const char *operator+=(const char *);
const MyString operator=(MyString &);
const char *operator=(const char *);
int operator==(MyString &);
int operator==(const char *);](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-8-320.jpg)
![int operator!=(MyString &);
int operator!=(const char *);
bool operator>(MyString &);
bool operator>(const char *);
bool operator<(MyString &);
bool operator<(const char *);
bool operator>=(MyString &);
bool operator>=(const char*);
bool operator<=(MyString &);
bool operator<=(const char *);
// Friends functions
friend ostream &operator<<(ostream &, const MyString &);
friend istream &operator>>(istream &, MyString &);
};
#endif /* end of MYSTRING_H */
**************************************************mystring.cpp*****************
***********************
// This is an implementation file for the MyString class
#include // include this for string library functions
#include "MyString.h"
const MyString MyString::operator=(MyString &right)
{
if (len != 0)
delete [] str;
str = new char[right.length() + 1];
strcpy(str, right.getValue());
len = right.length();
return *this;
}
const char *MyString::operator=(const char *right)
{
if (len != 0)
delete [] str;
len = strlen(right);
str = new char[len + 1];](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-9-320.jpg)
![strcpy(str, right);
return str;
}
const MyString MyString::operator+=(MyString &right)
{
char *temp = str;
str = new char[strlen(str) + right.length() + 1];
strcpy(str, temp);
strcat(str, right.getValue());
if (len != 0)
delete [] temp;
len = strlen(str);
return *this;
}
const char *MyString::operator+=(const char *right)
{
char *temp = str;
str = new char[strlen(str) + strlen(right) + 1];
strcpy(str, temp);
strcat(str, right);
if (len != 0)
delete [] temp;
return str;
}
int MyString::operator==(MyString &right)
{
return !strcmp(str, right.getValue());
}
int MyString::operator==(const char *right)
{
return !strcmp(str, right);
}
int MyString::operator!=(MyString &right)
{](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-10-320.jpg)
![#include
class MyString;
// declaration of forward operators.
ostream &operator<<(ostream &, const MyString &);
istream &operator>>(istream &, MyString &);
// MyString is a class. This is an abstract data type for handling strings.
class MyString
{
private:
char *str;
int len;
public:
// this is a default constructor
MyString()
{
str = NULL; len = 0;
}
// this is a copy constructor
MyString(MyString &right)
{
str = new char[right.length() + 1];
strcpy(str, right.getValue());
len = right.length();
}
// The following constructor initializes the
// MyString object with a C-string
MyString(char *sptr)
{
len = strlen(sptr);
str = new char[len + 1];
strcpy(str, sptr);
}
// this is a destructor
~MyString()
{
if (len != 0)](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-20-320.jpg)
![delete [] str;
}
// Here is the length function which returns the string length.
int length() const
{
return len;
}
// The getValue function which returns the string.
const char *getValue() const
{
return str;
};
// here are overloaded operators
const MyString operator+=(MyString &);
const char *operator+=(const char *);
const MyString operator=(MyString &);
const char *operator=(const char *);
int operator==(MyString &);
int operator==(const char *);
int operator!=(MyString &);
int operator!=(const char *);
bool operator>(MyString &);
bool operator>(const char *);
bool operator<(MyString &);
bool operator<(const char *);
bool operator>=(MyString &);
bool operator>=(const char*);
bool operator<=(MyString &);
bool operator<=(const char *);
// Friends functions
friend ostream &operator<<(ostream &, const MyString &);
friend istream &operator>>(istream &, MyString &);
};
#endif /* end of MYSTRING_H */
**************************************************mystring.cpp*****************
***********************](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-21-320.jpg)
![// This is an implementation file for the MyString class
#include // include this for string library functions
#include "MyString.h"
const MyString MyString::operator=(MyString &right)
{
if (len != 0)
delete [] str;
str = new char[right.length() + 1];
strcpy(str, right.getValue());
len = right.length();
return *this;
}
const char *MyString::operator=(const char *right)
{
if (len != 0)
delete [] str;
len = strlen(right);
str = new char[len + 1];
strcpy(str, right);
return str;
}
const MyString MyString::operator+=(MyString &right)
{
char *temp = str;
str = new char[strlen(str) + right.length() + 1];
strcpy(str, temp);
strcat(str, right.getValue());
if (len != 0)
delete [] temp;
len = strlen(str);
return *this;
}
const char *MyString::operator+=(const char *right)
{](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-22-320.jpg)
![char *temp = str;
str = new char[strlen(str) + strlen(right) + 1];
strcpy(str, temp);
strcat(str, right);
if (len != 0)
delete [] temp;
return str;
}
int MyString::operator==(MyString &right)
{
return !strcmp(str, right.getValue());
}
int MyString::operator==(const char *right)
{
return !strcmp(str, right);
}
int MyString::operator!=(MyString &right)
{
return strcmp(str, right.getValue());
}
int MyString::operator!=(const char *right)
{
return strcmp(str, right);
}
bool MyString::operator>(MyString &right)
{
bool status;
if (strcmp(str, right.getValue()) > 0)
status = true;
else status = false;
return status;
}
bool MyString::operator>(const char *right)
{](https://image.slidesharecdn.com/answermain-230408100742-cb26fb71/85/Answer-main-cpp-pdf-23-320.jpg)
Answer main.cpp.pdf
- 1. Answer ****************************************main.cpp****************************** **************************** #include #include #include #include "Month.h" int main() { //testing the constructors here Month myMonth1; Month myMonth12(12); Month myMonth3("March"); string newMonth = "May"; int newNum = 4; //testing the get and set functions cout << " ---------------------------------------------" << endl; cout << "Testing Constructors, Set() and Get()" << endl; cout << "---------------------------------------------" << endl; cout << "myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << "myMonth1.getMonthName() gives: " << myMonth12.getMonthName() << endl; cout << "myMonth12.getMonthNumber() gives: " << myMonth12.getMonthNumber() << endl; cout << "myMonth3.getMonthName() gives: " << myMonth3.getMonthName() << endl; cout << "myMonth3.getMonthNumber() gives: " << myMonth3.getMonthNumber() << endl; cout << endl << "Setting number to " << newNum << endl; myMonth1.setMonthNumber(newNum); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << endl << "Setting number to 13 (invalid) " << endl; myMonth1.setMonthNumber(13); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl;
- 2. cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << endl << "Setting name to " << newMonth << endl; myMonth1.setMonthName(newMonth); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << endl << "Setting name to XYZ (invalid) "<< endl; myMonth1.setMonthName("XYZ"); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; //testing inputs, outputs, increments and decrements cout << " ---------------------------------------------" << endl; cout << "Testing cin, cout, increments and decrements" << endl; cout << "---------------------------------------------" << endl; cout << "myMonth12 is " << myMonth12<< endl; cout << "myMonth12++ gives "<< myMonth12++ << endl; cout << "But myMonth12 is now " << myMonth12 << endl; cout << "++myMonth12 gives "<< ++myMonth12 << endl; cout << "myMonth12-- gives "<< myMonth12-- << endl; cout << "But myMonth2 is now " << myMonth12 << endl; cout << "--myMonth12 gives "<< --myMonth12 << endl; Month myMonth5; cin >> myMonth5; cout << "myMonth5 is set to "<< myMonth5 << endl; cout << "Press Enter to quit." << endl; cin.ignore(); cin.get(); return 0; } ***********************************************month.h************************ **************************** #ifndef MONTH_H #define MONTH_H #include
- 3. #include #include #include "MyString.h" class Month { private: MyString monthName; int monthNumber; // monthNumber will accept from 1 to 12 public: Month() { monthName = "January"; monthNumber = 1; } Month(const char *name) { setMonthName(name); } Month(const int num) { setMonthNumber(num); } MyString getMonthName() { return monthName; } int getMonthNumber() const {return monthNumber; } void setMonthName(const string name); void setMonthNumber(const int num); Month operator++(); Month operator++(int); Month operator--(); Month operator--(int); friend ostream &operator<<(ostream &strm, const Month &obj); friend istream &operator >> (istream &strm, Month &monthObj); }; #endif /* end of MONTH_H */ **************************************************month.cpp******************* ****************************** #include #include #include #include "MyString.h" #include "Month.h" void Month::setMonthName(const string name) { if (name == "January" || name == "Jan") setMonthNumber(1); else if (name == "February" || name == "Feb")
- 4. { setMonthNumber(2); } else if (name == "March" || name == "Mar") { setMonthNumber(3); } else if (name == "April" || name == "Apr") { setMonthNumber(4); } else if (name == "May") { setMonthNumber(5); } else if (name == "June" || name == "Jun") { setMonthNumber(6); } else if (name == "July" || name == "Jul") { setMonthNumber(7); } else if (name == "August" || name == "Aug") { setMonthNumber(8); } else if (name == "September"|| name == "Sept") { setMonthNumber(9); } else if (name == "October" || name == "Oct") { setMonthNumber(10); } else if (name == "November" || name == "Nov")
- 5. { setMonthNumber(11); } else if (name == "December" || name == "Dec") { setMonthNumber(12); } else { setMonthNumber(1); } } void Month::setMonthNumber(const int num) { if (num < 1 || num > 12) monthNumber = 1; else monthNumber = num; if(monthNumber == 1) monthName = "January"; else if(monthNumber == 2) monthName = "February"; else if(monthNumber == 3) monthName = "March"; else if(monthNumber == 4) monthName = "April"; else if(monthNumber == 5) monthName = "May"; else if(monthNumber == 6) monthName = "June"; else if(monthNumber == 7) monthName = "July"; else if(monthNumber == 8) monthName = "August"; else if(monthNumber == 9) monthName = "September";
- 6. else if(monthNumber == 10) monthName = "October"; else if(monthNumber == 11) monthName = "November"; else monthName = "December"; } Month Month::operator++() { if (monthNumber == 12) monthNumber = 1; else ++monthNumber; setMonthNumber(monthNumber); return *this; } Month Month::operator++(int) { Month temp(monthNumber); setMonthNumber(++monthNumber); return temp; } Month Month::operator--() { if (monthNumber == 1) monthNumber = 12; else --monthNumber; setMonthNumber(monthNumber); return *this; } Month Month::operator--(int) { Month temp(monthNumber); setMonthNumber(--monthNumber); return temp; } ostream &operator << (ostream &strm, const Month &obj)
- 7. { return strm << obj.monthName << "(" << obj.monthNumber << ")"; } istream &operator >> (istream &strm, Month &monthObj) { string m_Name; cout << endl << "Please enter the month name: " << endl; strm >> m_Name; monthObj.setMonthName(m_Name); return strm; } *******************************************mystring.h************************** *********** // header file for the MyString class #ifndef MYSTRING_H #define MYSTRING_H #include #include class MyString; // declaration of forward operators. ostream &operator<<(ostream &, const MyString &); istream &operator>>(istream &, MyString &); // MyString is a class. This is an abstract data type for handling strings. class MyString { private: char *str; int len; public: // this is a default constructor MyString() { str = NULL; len = 0; } // this is a copy constructor MyString(MyString &right)
- 8. { str = new char[right.length() + 1]; strcpy(str, right.getValue()); len = right.length(); } // The following constructor initializes the // MyString object with a C-string MyString(char *sptr) { len = strlen(sptr); str = new char[len + 1]; strcpy(str, sptr); } // this is a destructor ~MyString() { if (len != 0) delete [] str; } // Here is the length function which returns the string length. int length() const { return len; } // The getValue function which returns the string. const char *getValue() const { return str; }; // here are overloaded operators const MyString operator+=(MyString &); const char *operator+=(const char *); const MyString operator=(MyString &); const char *operator=(const char *); int operator==(MyString &); int operator==(const char *);
- 9. int operator!=(MyString &); int operator!=(const char *); bool operator>(MyString &); bool operator>(const char *); bool operator<(MyString &); bool operator<(const char *); bool operator>=(MyString &); bool operator>=(const char*); bool operator<=(MyString &); bool operator<=(const char *); // Friends functions friend ostream &operator<<(ostream &, const MyString &); friend istream &operator>>(istream &, MyString &); }; #endif /* end of MYSTRING_H */ **************************************************mystring.cpp***************** *********************** // This is an implementation file for the MyString class #include // include this for string library functions #include "MyString.h" const MyString MyString::operator=(MyString &right) { if (len != 0) delete [] str; str = new char[right.length() + 1]; strcpy(str, right.getValue()); len = right.length(); return *this; } const char *MyString::operator=(const char *right) { if (len != 0) delete [] str; len = strlen(right); str = new char[len + 1];
- 10. strcpy(str, right); return str; } const MyString MyString::operator+=(MyString &right) { char *temp = str; str = new char[strlen(str) + right.length() + 1]; strcpy(str, temp); strcat(str, right.getValue()); if (len != 0) delete [] temp; len = strlen(str); return *this; } const char *MyString::operator+=(const char *right) { char *temp = str; str = new char[strlen(str) + strlen(right) + 1]; strcpy(str, temp); strcat(str, right); if (len != 0) delete [] temp; return str; } int MyString::operator==(MyString &right) { return !strcmp(str, right.getValue()); } int MyString::operator==(const char *right) { return !strcmp(str, right); } int MyString::operator!=(MyString &right) {
- 11. return strcmp(str, right.getValue()); } int MyString::operator!=(const char *right) { return strcmp(str, right); } bool MyString::operator>(MyString &right) { bool status; if (strcmp(str, right.getValue()) > 0) status = true; else status = false; return status; } bool MyString::operator>(const char *right) { bool status; if (strcmp(str, right) > 0) status = true; else status = false; return status; } bool MyString::operator<(MyString &right) { bool status; if (strcmp(str, right.getValue()) < 0) status = true; else status = false; return status; } bool MyString::operator<(const char *right) { bool status;
- 12. if (strcmp(str, right) < 0) status = true; else status = false; return status; } bool MyString::operator>=(MyString &right) { bool status; if (strcmp(str, right.getValue()) >= 0) status = true; else status = false; return status; } bool MyString::operator>=(const char *right) { bool status; if (strcmp(str, right) >= 0) status = true; else status = false; return status; } bool MyString::operator<=(MyString &right) { bool status; if (strcmp(str, right.getValue()) <= 0) status = true; else status = false; return status; } bool MyString::operator<=(const char *right) { bool status;
- 13. if (strcmp(str, right) <= 0) status = true; else status = false; return status; } ostream &operator<<(ostream &strm, const MyString &obj) { strm << obj.str; return strm; } istream &operator>>(istream &strm, MyString &obj) { strm.getline(obj.str, obj.len); strm.ignore(); return strm; } Solution Answer ****************************************main.cpp****************************** **************************** #include #include #include #include "Month.h" int main() { //testing the constructors here Month myMonth1; Month myMonth12(12); Month myMonth3("March"); string newMonth = "May"; int newNum = 4;
- 14. //testing the get and set functions cout << " ---------------------------------------------" << endl; cout << "Testing Constructors, Set() and Get()" << endl; cout << "---------------------------------------------" << endl; cout << "myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << "myMonth1.getMonthName() gives: " << myMonth12.getMonthName() << endl; cout << "myMonth12.getMonthNumber() gives: " << myMonth12.getMonthNumber() << endl; cout << "myMonth3.getMonthName() gives: " << myMonth3.getMonthName() << endl; cout << "myMonth3.getMonthNumber() gives: " << myMonth3.getMonthNumber() << endl; cout << endl << "Setting number to " << newNum << endl; myMonth1.setMonthNumber(newNum); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << endl << "Setting number to 13 (invalid) " << endl; myMonth1.setMonthNumber(13); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << endl << "Setting name to " << newMonth << endl; myMonth1.setMonthName(newMonth); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; cout << endl << "Setting name to XYZ (invalid) "<< endl; myMonth1.setMonthName("XYZ"); cout << "Now myMonth1.getMonthName() gives: " << myMonth1.getMonthName() << endl; cout << "And myMonth1.getMonthNumber() gives: " << myMonth1.getMonthNumber() << endl; //testing inputs, outputs, increments and decrements cout << " ---------------------------------------------" << endl; cout << "Testing cin, cout, increments and decrements" << endl; cout << "---------------------------------------------" << endl; cout << "myMonth12 is " << myMonth12<< endl;
- 15. cout << "myMonth12++ gives "<< myMonth12++ << endl; cout << "But myMonth12 is now " << myMonth12 << endl; cout << "++myMonth12 gives "<< ++myMonth12 << endl; cout << "myMonth12-- gives "<< myMonth12-- << endl; cout << "But myMonth2 is now " << myMonth12 << endl; cout << "--myMonth12 gives "<< --myMonth12 << endl; Month myMonth5; cin >> myMonth5; cout << "myMonth5 is set to "<< myMonth5 << endl; cout << "Press Enter to quit." << endl; cin.ignore(); cin.get(); return 0; } ***********************************************month.h************************ **************************** #ifndef MONTH_H #define MONTH_H #include #include #include #include "MyString.h" class Month { private: MyString monthName; int monthNumber; // monthNumber will accept from 1 to 12 public: Month() { monthName = "January"; monthNumber = 1; } Month(const char *name) { setMonthName(name); } Month(const int num) { setMonthNumber(num); } MyString getMonthName() { return monthName; } int getMonthNumber() const {return monthNumber; } void setMonthName(const string name); void setMonthNumber(const int num);
- 16. Month operator++(); Month operator++(int); Month operator--(); Month operator--(int); friend ostream &operator<<(ostream &strm, const Month &obj); friend istream &operator >> (istream &strm, Month &monthObj); }; #endif /* end of MONTH_H */ **************************************************month.cpp******************* ****************************** #include #include #include #include "MyString.h" #include "Month.h" void Month::setMonthName(const string name) { if (name == "January" || name == "Jan") setMonthNumber(1); else if (name == "February" || name == "Feb") { setMonthNumber(2); } else if (name == "March" || name == "Mar") { setMonthNumber(3); } else if (name == "April" || name == "Apr") { setMonthNumber(4); } else if (name == "May") { setMonthNumber(5); } else if (name == "June" || name == "Jun") {
- 17. setMonthNumber(6); } else if (name == "July" || name == "Jul") { setMonthNumber(7); } else if (name == "August" || name == "Aug") { setMonthNumber(8); } else if (name == "September"|| name == "Sept") { setMonthNumber(9); } else if (name == "October" || name == "Oct") { setMonthNumber(10); } else if (name == "November" || name == "Nov") { setMonthNumber(11); } else if (name == "December" || name == "Dec") { setMonthNumber(12); } else { setMonthNumber(1); } } void Month::setMonthNumber(const int num) { if (num < 1 || num > 12) monthNumber = 1; else
- 18. monthNumber = num; if(monthNumber == 1) monthName = "January"; else if(monthNumber == 2) monthName = "February"; else if(monthNumber == 3) monthName = "March"; else if(monthNumber == 4) monthName = "April"; else if(monthNumber == 5) monthName = "May"; else if(monthNumber == 6) monthName = "June"; else if(monthNumber == 7) monthName = "July"; else if(monthNumber == 8) monthName = "August"; else if(monthNumber == 9) monthName = "September"; else if(monthNumber == 10) monthName = "October"; else if(monthNumber == 11) monthName = "November"; else monthName = "December"; } Month Month::operator++() { if (monthNumber == 12) monthNumber = 1; else ++monthNumber; setMonthNumber(monthNumber); return *this; } Month Month::operator++(int)
- 19. { Month temp(monthNumber); setMonthNumber(++monthNumber); return temp; } Month Month::operator--() { if (monthNumber == 1) monthNumber = 12; else --monthNumber; setMonthNumber(monthNumber); return *this; } Month Month::operator--(int) { Month temp(monthNumber); setMonthNumber(--monthNumber); return temp; } ostream &operator << (ostream &strm, const Month &obj) { return strm << obj.monthName << "(" << obj.monthNumber << ")"; } istream &operator >> (istream &strm, Month &monthObj) { string m_Name; cout << endl << "Please enter the month name: " << endl; strm >> m_Name; monthObj.setMonthName(m_Name); return strm; } *******************************************mystring.h************************** *********** // header file for the MyString class #ifndef MYSTRING_H #define MYSTRING_H #include
- 20. #include class MyString; // declaration of forward operators. ostream &operator<<(ostream &, const MyString &); istream &operator>>(istream &, MyString &); // MyString is a class. This is an abstract data type for handling strings. class MyString { private: char *str; int len; public: // this is a default constructor MyString() { str = NULL; len = 0; } // this is a copy constructor MyString(MyString &right) { str = new char[right.length() + 1]; strcpy(str, right.getValue()); len = right.length(); } // The following constructor initializes the // MyString object with a C-string MyString(char *sptr) { len = strlen(sptr); str = new char[len + 1]; strcpy(str, sptr); } // this is a destructor ~MyString() { if (len != 0)
- 21. delete [] str; } // Here is the length function which returns the string length. int length() const { return len; } // The getValue function which returns the string. const char *getValue() const { return str; }; // here are overloaded operators const MyString operator+=(MyString &); const char *operator+=(const char *); const MyString operator=(MyString &); const char *operator=(const char *); int operator==(MyString &); int operator==(const char *); int operator!=(MyString &); int operator!=(const char *); bool operator>(MyString &); bool operator>(const char *); bool operator<(MyString &); bool operator<(const char *); bool operator>=(MyString &); bool operator>=(const char*); bool operator<=(MyString &); bool operator<=(const char *); // Friends functions friend ostream &operator<<(ostream &, const MyString &); friend istream &operator>>(istream &, MyString &); }; #endif /* end of MYSTRING_H */ **************************************************mystring.cpp***************** ***********************
- 22. // This is an implementation file for the MyString class #include // include this for string library functions #include "MyString.h" const MyString MyString::operator=(MyString &right) { if (len != 0) delete [] str; str = new char[right.length() + 1]; strcpy(str, right.getValue()); len = right.length(); return *this; } const char *MyString::operator=(const char *right) { if (len != 0) delete [] str; len = strlen(right); str = new char[len + 1]; strcpy(str, right); return str; } const MyString MyString::operator+=(MyString &right) { char *temp = str; str = new char[strlen(str) + right.length() + 1]; strcpy(str, temp); strcat(str, right.getValue()); if (len != 0) delete [] temp; len = strlen(str); return *this; } const char *MyString::operator+=(const char *right) {
- 23. char *temp = str; str = new char[strlen(str) + strlen(right) + 1]; strcpy(str, temp); strcat(str, right); if (len != 0) delete [] temp; return str; } int MyString::operator==(MyString &right) { return !strcmp(str, right.getValue()); } int MyString::operator==(const char *right) { return !strcmp(str, right); } int MyString::operator!=(MyString &right) { return strcmp(str, right.getValue()); } int MyString::operator!=(const char *right) { return strcmp(str, right); } bool MyString::operator>(MyString &right) { bool status; if (strcmp(str, right.getValue()) > 0) status = true; else status = false; return status; } bool MyString::operator>(const char *right) {
- 24. bool status; if (strcmp(str, right) > 0) status = true; else status = false; return status; } bool MyString::operator<(MyString &right) { bool status; if (strcmp(str, right.getValue()) < 0) status = true; else status = false; return status; } bool MyString::operator<(const char *right) { bool status; if (strcmp(str, right) < 0) status = true; else status = false; return status; } bool MyString::operator>=(MyString &right) { bool status; if (strcmp(str, right.getValue()) >= 0) status = true; else status = false; return status; } bool MyString::operator>=(const char *right) {
- 25. bool status; if (strcmp(str, right) >= 0) status = true; else status = false; return status; } bool MyString::operator<=(MyString &right) { bool status; if (strcmp(str, right.getValue()) <= 0) status = true; else status = false; return status; } bool MyString::operator<=(const char *right) { bool status; if (strcmp(str, right) <= 0) status = true; else status = false; return status; } ostream &operator<<(ostream &strm, const MyString &obj) { strm << obj.str; return strm; } istream &operator>>(istream &strm, MyString &obj) { strm.getline(obj.str, obj.len); strm.ignore(); return strm; }