等腰三角形的循环

//
//  main.c
//  等腰三角形循环
//
//  Created by 毛遵杰 on 2019/1/6.
//  Copyright © 2019 毛遵杰. All rights reserved.
//

#include <stdio.h>
int main(void)
{
    int n;
    printf("please enter a number");
    scanf("%d",&n);
    
    for(int i=1;i<=n;i++)
    {
        for (int empty=1;empty<=n-i;empty++)
        {
            printf(" ");
        }
        for ( int word=1;word<=i;word++)
        {
            printf("*");
        }
        for (int word2=1;word2<=i-1;word2++)
        {
            printf("*");
        }
        printf("\n");
    }
    
    for (int i=1;i<=n;i++)
    {
        for (int empty=1;empty<=i;empty++)
        {
            printf(" ");
        }
        for(int word=1;word<=n-i;word++)
        {
            printf("*");
        }
        for (int word2=1;word2<=n-i-1;word2++)
        {
            printf("*");
        }
        printf("\n");
    }
    
    return 0;
    
}