Elements of programming-7

Loops :

A block of statements executed repeatedly until a condition is true.this is called loop.

There are three types of loop.

1. 1.       While loop
2. 2.       Do—while loop
3. 3.       For loop

While loop

A  variable is initialized first then it is  compared with a value. Until that condition is true the statements inside the loop  will be executed repeatedly. The counter variable will be incremented or decremented  inside the loop.

Example-1

#include <stdio.h>

int main()

{

    int i=1;

    while(i<=10)

    {

        printf("%d\n",i);

        i++;

    }

    return 0;

}

Output:

Example-2:

#include <stdio.h>

int main()

{

    int i=1,sum=0;

    while(i<=10)

    {

        sum=sum+i;

        i++;

    }

    printf("sum from 1+2--+3=%d",sum);

    return 0;

}

Output:

--------------will continue,

Thanking you

------Muthu karthikeyan,Madurai