![F2037 PROGRAMMING FUNDAMENTAL WITH C++
1
[newline] n "1n2"
2
[horizontal tab] t "1t2" 12
• Manipulators allowed us to format the output in a
desired way.
• To use manipulator we need to include header file
iomanip.
• The following table is showing manipulators that is
commonly used:
Syntax Purpose
setprecision(n) Set decimal precision
setfill(c) Setfill character
setw(n) Set field width
Activity 3A
Procedure :
Step 1: Type the programs given below
Step 2: Compile and run the program. Write the output.
Step 3: Save the program as lab3A.cpp.
The following program illustrate input name from user and
the usage of usage of header file string.h
#include <iostream>
#include <string >
using namespace std;
void main()
{
2](https://image.slidesharecdn.com/labsheet3-120807162925-phpapp01/85/Labsheet_3-2-320.jpg)
Labsheet_3
- 1. F2037 PROGRAMMING FUNDAMENTAL WITH C++ LAB 3: INPUT/OUTPUT Objectives By the end of this lab, students should be able to : • Describe the structure of input-output statement • Write a program that use the input and output statements Theory/ Topics • In C++, << is called stream insertion operator. • Output on standard output device (such as monitor) is accomplish via the use of cout and operator >>. • In C++, >> is called stream extraction operator. • Input from the standard input device (such as keyboard) is accomplished by using cin. • To use cin and cout, the program must include header file iostream. • A manipulator is used to format output. • endl is the simplest manipulator which cause insertion point to move to the beginning of next line. • In C++, is called the escape character while n is called newline escape sequence. • Common escape sequence is shown in the following table: For this Use this Example Output "Don't do ' ' Don't do that that" "She said " " She said "hi" "hi"" "Backslash: Backslash: " 1
- 2. F2037 PROGRAMMING FUNDAMENTAL WITH C++ 1 [newline] n "1n2" 2 [horizontal tab] t "1t2" 12 • Manipulators allowed us to format the output in a desired way. • To use manipulator we need to include header file iomanip. • The following table is showing manipulators that is commonly used: Syntax Purpose setprecision(n) Set decimal precision setfill(c) Setfill character setw(n) Set field width Activity 3A Procedure : Step 1: Type the programs given below Step 2: Compile and run the program. Write the output. Step 3: Save the program as lab3A.cpp. The following program illustrate input name from user and the usage of usage of header file string.h #include <iostream> #include <string > using namespace std; void main() { 2
- 3. F2037 PROGRAMMING FUNDAMENTAL WITH C++ string name; cout << "Please enter your name : "; cin >> name; cout << "Your name have " << name.size() << " characters.n"; } Activity 3B Procedure : Step 1: Type the programs given below Step 2: Compile and run the program. Write the output. Step 3: Save the program as Lab3B.cpp. // setfill example #include <iostream> #include <iomanip> using namespace std; int main () { cout << setfill ('x') << setw (10); cout << 77 << endl; return 0; } Activity 3C Procedure : Step 1: Type the programs given below Step 2: Compile and run the program. Write the output. Step 3: Save the program as Lab3C.cpp. 3
- 4. F2037 PROGRAMMING FUNDAMENTAL WITH C++ #include <iostream> #include <iomanip> using namespace std; int main() { const int max = 12; const int width = 6; for(int row = 1;row <= max;row++) { for(int col = 1;col <= max;col++) { cout << setw(width) << row * col; } cout << endl; } return 0; } Activity 3D Procedure : Step 1: Type the programs given below Step 2: Compile and run the program. Write the output. Step 3: Save the program as Lab3C.cpp. #include <iostream> #include <iomanip> using namespace std; int main() { const int max = 12; const int width = 6; for(int row = 1;row <= max;row++) { if(row % 2) { cout << setiosflags(ios::left); } 4
- 5. F2037 PROGRAMMING FUNDAMENTAL WITH C++ else { cout << resetiosflags(ios::left); } for(int col = 1;col <= max;col+ +) { cout << setw(width) << row * col; } cout << endl; } return 0; } Activity 3D Procedure : Step 1: Type the programs given below Step 2: Compile and run the program. Write the output. Step 3: Save the program as Lab3D..cpp. #include <iostream> #include <iomanip> using namespace std; int main() { double x = 800000.0/81.0; cout << setprecision(2) << x; return 0; } Exercise 3.1 5
- 6. F2037 PROGRAMMING FUNDAMENTAL WITH C++ Display the following output using function provided in header file, iomanip. ********** ******** ***** *** * Exercise 3.2 Write a program the will receive an input in $US and display the corresponding value in RM. (RM3.52 = $US1). Exercise 3.3 Write a program that will receive 2 inputs (a and b) and calculate the value of c by using Pythagoras Theorem. (Hint: Use mathematical library functions) Check: c If a = 4, b = 3 b hence c = 5 a 6