c语言初学-输出菱形

#include<stdio.h>void diamond(int n);int main(){int a;printf("输入菱形的边长:");scanf("%d",&a);    diamond(a);return 0;}void diamond(int n){int i,j;for(i=1;i<=n;i++){for(j=n-i;j>0;j--){printf(" ");}for(j=0;j<i;j++){printf("* ");} printf("\n");}for(i=1;i<n;i++){for(j=0;j<i;j++){printf(" ");}for(j=0;j<n-i;j++){printf("* ");}printf("\n");}}