WHILE LOOP IN C

In while loop the condition is tested first and then the statements are executed if the condition turns out to be true.  
A while loop is never execute if its test condition would be false.

Example 1: Program To Print Counting 1 - 10

#include<stdio.h>
#include<conio.h>
void main
{
int a=1;

while(a <=10)

{

printf(“\n%d”,a);

a=a+1;

getch();
}


Example 2: Program To Print Reverse Counting 10 - 1

#include<stdio.h>
#include<conio.h>
void main()
{
int a=10;

do

{

printf(“\n%d”,a);

a=a+1;

}
while(a >=1);
getch();
}

----------------------------
         OUTPUT 
----------------------------
10

9

8

7

6

5

4

2

1

DO WHILE LOOP >>