star triangle

Program to print star triangl
#include <stdio.h>
int main() {
       int rows, star, spaces;
        int number_of_stars = 6;
        int number_of_rows = number_of_stars;
        for (rows=1; rows <= number_of_rows; rows++) {
                for (spaces=1; spaces <= number_of_stars; spaces++) {
                        printf(" ");
                }
                for (star=1; star <= rows; star++) {
                        printf("*");
                        printf(" ");
                }
                printf("
");
                number_of_stars = number_of_stars - 1;
        }
        return 0;
}