C program to print the given star pattern. 
*
**
***
****
*****

C Programming Language Loop control in C Language (Article) Loop control in C Language (Program)

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Program:

#include "stdio.h"
int main()
{
    int i=1,j;
    do
    {
        j=1;
        do
        {
            printf("*");
            j++;
        }while(j <= i);
        i++;
        printf("\n");
    }while(i <= 5);
    return 0;
}

Output:

*
**
***
****
*****
Press any key to continue . . .

Explanation:

In this program, the nested do-while loop is used to print the star pattern. The outermost loop runs 5 times and for every loop, the innermost loop runs i times which is 1 at first, meaning only one "*" is printed, then on the next loop it's 2 printing two stars and so on till 5 iterations of the loop executes, printing five stars. This way, the given star pattern is printed.

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