C program to print square star pattern

• Write a C program to print square star pattern of n rows using for loop.

For a square star pattern of side 5 stars. Program’s output should be:

Required Knowledge

• For Loop
• printf and scanf function in C

Algorithm to print square star pattern using loop

• Take the number of stars in each side of square as input from user using scanf function. Let it be N.
• We will use two for loops to print square star pattern.
• In one iteration, outer for loop will print one row of pattern.
• In one iteration, inner for loop will print one star (*) characters in a row.

Here is the matrix representation of the square star pattern. The row numbers are represented by i whereas column numbers are represented by j.

C program to print square star pattern

#include<stdio.h>
 
int main(){
    int side, i, j;
     
    printf("Enter side of square\n");
    scanf("%d", &side);
     
    /* Row iterator for loop */
    for(i = 0; i < side; i++){
     /* Column iterator for loop */
        for(j = 0; j < side; j++){
           printf("*");
        }
        printf("\n");
    }
    return 0;
}

Output

Enter side of square
5
*****
*****
*****
*****
*****