While Loop in C with Example

A while loop in C is used to execute and repeat a block of statements based on a certain condition.

Syntex:-
while()
{
<statement Block>
}

Also Read, C Program To Find Factorial of a Number with Example

• while is the relational or logical expression that will have the value of true or false.
• When this statement is executed, the computer will evaluate the value of the condition.
• If the evaluated value is true, then the block of statement is executed and is repeated until the value of the condition is false.

There must be a statement written inside the statement block to change the value of the condition, the loop will be in the infinite state.

Print natural numbers from 1 to n using while loop in C language

Complete Code:-

#include <stdio.h> 
main() 
{ 
int i, n; 
printf("Enter the value to n:"); 
scanf("%d",&n); 
//while loop to print the numbers 
while(i<=n) 
{ 
i++; 
printf("\n %d",i); 
} 
}

After running the above program, the user has to enter the nth value and press the ENTER key.