mir_half_dia_star.c

/*
mirrored half diamond star pattern

    *
   **
  ***
 ****
*****
 ****
  ***
   **
    *
*/



#include<stdio.h>

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