In C++, a while loop is a control flow statement that allows code to be executed repeatedly based on a given boolean condition. The while loop can be thought of as a repeating if statement.

Syntax

while ( condition ) {
 Code to execute while the condition is true
}

Example Program

/*  Example Program For While Loop In C++
    Pardeep Patel @ studywarehouse.com     */

#include<iostream>
#include<conio.h>

using namespace std;

int main()
{
     // Variable Declaration
     int a;

     // Get Input Value
     cout<<"Enter the Number :";
     cin>>a;

     int counter = 1;
     //while Loop Block
     while (counter <= a)
     {
         cout<<"Execute While "<<counter<<" time"<<endl;
         counter++;
     }

     // Wait For Output Screen
     getch();
     return 0;
 }

Sample Output:
Enter the Number: 4
Execute While 1 time
Execute While 2 time
Execute While 3 time
Execute While 4 time