Question

How to print hollow pyramid of stars in C

Answer 1

#include <stdio.h>

void print_hollow_pyramid(int rows) {
    for (int i = 0; i < rows - 1; i++) {
        for (int space = 1; space < rows-i; space++) {
            printf(" ");
        }
        for (int star = 0; star <= 2*i; star++) {
            if (star == 0 || star == 2 * i)
                printf("*");
            else
                printf(" ");
        }
        printf("\n");
    }
    for (int i = 0; i < 2 * rows - 1; i++) {
        printf("*");
    }
}

int main() {
    print_hollow_pyramid(7);

    return 0;
}




/*
run:

      *
     * *
    *   *
   *     *
  *       *
 *         *
*************

*/

 

70+ SQL courses for beginners and professionals