C++ programming Basic and Operators of C++
- 1. Sanjivani Rural Education Society’s Sanjivani College of Engineering, Kopargaon-423 603 (An Autonomous Institute, Affiliated to Savitribai Phule Pune University, Pune) NAAC ‘A’Grade Accredited, ISO 9001:2015 Certified Department of Computer Engineering (NBA Accredited) Subject- Object Oriented Programming (CO212) Unit 1 – Fundamentals of OOP Topic – 1.4 C++ Programming Basics Prof. V.N.Nirgude Assistant Professor Email: nirgudevikascomp@sanjivani.org.in Contact No: 9975240215
- 2. What is C++? DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 2 ◼ C++ is a compiled, object-oriented language ◼ It is the “successor” to C, ◼ (the “++” is called the successor operator in C++) ◼ C was derived from a language called B which derived from BCPL was in turn ◼ C was developed in the 1970’s by Dennis Bell Labs Ritchie of AT&T ◼ C++ was developed in the early Stroustrup of AT&T Bell Labs. 1980’s by Bjarne ◼ Most of C is a subset of C++
- 3. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 3 #include <iostream> int main() { // Declarations // Statements return 0; } ◼ Compiler directive: Tells the compiler what to do before compiling ◼ This one includes source code from another file
- 4. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 4 #include <iostream> int main() { // Declarations // Statements return 0; } ◼ Main function
- 5. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 5 #include <iostream> int main() { // Declarations // Statements return 0; } ◼ Header for main function ◼ States… ◼ data type for the return value ◼ identifier for function ◼ list of arguments between parenthesis (none for this function)
- 6. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 6 #include <iostream> int main() { // Declarations // Statements return 0; } ◼ Braces enclose the body of the function ◼ They represent the start and end of the function
- 7. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 7 #include <iostream> int main() { // Declarations // Statements return 0; } ◼ Declarations and statements ◼ Main body of function ◼ “//” represents the start of a comment
- 8. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 8 #include <iostream> int main() { // Declarations // Statements return 0; } Return statement: ◼ specifies the value the function returns ◼ All (almost) declarations and statements end with a semi-colon “;”
- 9. Simple C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 9 #include <iostream> int main() { // Declarations // Statements return 0; } ◼ This program doesn’t do anything!
- 10. Sample C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 10 #include <iostream> int main() { int number; cout << “Enter a number” <<endl; cin >> number; cout << “You entered: “ <<number; return 0; } Variable declaration: ◼ The identifier number is declared as being of data type int
- 11. Sample C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 11 #include <iostream> int main() { int number; cout << “Enter a number” <<endl; cin >> number; cout << “You entered: “ <<number; return 0; } ◼ cout: the output statement for C++ ◼ Note the direction of “<<“ ◼ endl: represents an end-of-line
- 12. Sample C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 12 #include <iostream> int main() { int number; cout << “Enter a number” <<endl; cin >> number; cout << “You entered: “ <<number; return 0; } ◼ cin: the input statement for C++ ◼ Note the direction of “>>”
- 13. Sample C++ Program DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 13 #include <iostream> int main() { int number; cout << “Enter a number” <<endl; cin >> number; cout << “You entered: “ <<number; return 0; } Output: Enter a number: 10 You entered:10
- 14. Thank You.. DEPARTMENT OF COMPUTER ENGINEERING , SCOE,KOPARGAON 14