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The ones who are crazy enough to think they can change the world are the ones who do.
- Steve Jobs

C while loop

The while loop, otherwise said to be a splitted for loop. Any program which are written using for loop can be written using while loop. Here, a block followed by the while loop will be executed repeatedly until the test condition is true.

while loop Syntax

Let us see how neat a syntax of while loop is

Syntax
while(test condition)
{
Body of the loop
.
}

while loop Flowchart

C for Loop

while loop Realtime

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C program - while loop

The following example program will clearly explain the concept of while loop

while.c
#include <stdio.h>
int main()
{
int a = 1;
while(a <= 5)
{
printf("%d ", a);
a++;
}
return 0;
}
  • 1 2 3 4 5

Note:

A variable a is initialized to 1 at the time of initializing a variable. The condition a = 5 is the test condition, which is tested for every iteration. A block followed by a while loop will be executed repeatedly until the test condition is true. a++ is used to increment the value of a every time after printing the value of a.

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