How do you make a star triangle using nested loop in a c program?

#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("\n");

number_of_stars = number_of_stars - 1;

}

return 0;

}