star pattern in c

Input rows: 5
    *
   ***
  *****
 *******
*********

/**
 * C program to print equilateral triangle or pyramid star pattern
 */

#include <stdio.h>

int main()
{
    int i, j, rows;

    /* Input number of rows to print */
    printf("Enter number of rows : ");
    scanf("%d", &rows);

    /* Iterate through rows */
    for(i=1; i<=rows; i++)
    { 
        /* Print leading spaces */
        for(j=i; j<rows; j++)
        {
            printf(" ");
        }

        /* Print star */
        for(j=1; j<=(2*i-1); j++)
        {
            printf("*");
        }

        /* Move to next line */
        printf("\n");
    }

    return 0;
}