#include <stdio.h>

int main() {
    
    int size = 5;
    
    //printf(">\n");
    //scanf("%d",&size);
    
    for(int h = 0; h < size; h++)
    {
        for(int i = size - h; i>=0; i--) //5-1-2-3-4 print spaces...
        {
            printf(" ");
        }
        
        for(int w = 0; w < h*2+1; w++) //column
        {
            printf("*");
        }
        printf("\n");

    } //first half of the triangle ends
    
    for(int h = size -2; h >= 0; h--) //second half,upside down triangle begins
    {
        for(int i = size - h; i >= 0; i--) //printing space
        {
            printf(" ");
        }
        
        for(int w = 0 ;w < h*2+1; w++)
        {
            printf("*");
        }
        printf("\n");
    }
   return 0;
}