How we can use simple while loop in c++ code

All loops are used for the repetition. Repetition is very important c++ or any other programing language. So, in while loop, first we declare one object and initialize it with any number which I want to use. Then we use key word while and use small brackets and write the condition in between the brackets. Then use curly brackets, write the statement which we want to execute and below use the increment operator. So, you can watch the code to understand the use of while loop in c++.

Code:

#include <iostream>

using namespace std;

int main()

{

                int i;

                i=0;

                while(i<=20)

                {

                                cout<<i<<endl;

                                i++;

                }

               

}

Output:

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Hope you understand the use of simple while loop in c++.

Click here for watching the video of that code