hol_pyramind.c

/*
hollow Equalitrial start  pyramid 
    *
   * *
  *   *
 *     *
*********
*/

#include<stdio.h>

int main(){
    int num = 5 ;
    int space = num;
    
    for (int i=1 ; i<=num ;i++){
        for (int k  = space + 1  ; k > 1; k--){
            printf(" ");
        }space --;
        for(int j=0 ;j< i*2 -1;j++){
            if ( j == 0 || i == num ||j == i *2 - 2 ){
                printf("*");
            }else{
                printf(" ");
            }
        }
        printf("\n");
    }
}