Programs on looping in C

while loop

/*
Author : ITVoyagers (https://itvoyagers.in/)

Date :25th December 2018

Description : While loop.
*/

#include<stdio.h>
void main()
{
    int r=0;
    while(r<5)
    {
        printf("%in",r);
        r++;
    }
}

Output:
0
1
2
3
4

do-while loop

/*
Author : ITVoyagers (https://itvoyagers.in/)

Date :25th December 2018

Description : do-While loop.
*/

#include<stdio.h>
void main()
{
    int r=0;
    do
    {
        printf("%in",r);
        r++;
    }
    while(r>5);
}

Output:
0

for loop

/*
Author : ITVoyagers (https://itvoyagers.in/)

Date :25th December 2018

Description : for loop.
*/

#include<stdio.h>
void main()
{
    int r;
    for(r=1;r<=5;r++)
    {
        printf("%dn",r);
    }
}

Output:
1
2
3
4
5

Nested loop

/*
Author : ITVoyagers (https://itvoyagers.in/)

Date :25th December 2018

Description : Nested loop.
*/

#include<stdio.h>
void main()
{
    int r,c;
    for(r=1;r<=5;r++)
    {
        for(c=1;c<=r;c++)
        {
            printf("*");
        }
        printf("n");
    }
}

Output:

*
**
***
****
*****