C语言 打印菱形（可变行数）

<span style="font-size:18px;">#include<stdio.h>int main(){int i = 0;int j = 0;int line = 0;printf("please enter the line:>");scanf("%d",&line);for(i=1; i<=line; i++){for(j=1; j<=line-i; j++)printf(" ");//printf("\n");for(j=1; j<=2*i-1; j++)printf("*");printf("\n");}for(i=1; i<=line-1; i++){for(j=1; j<=i; j++)printf(" ");for(j=1; j<=2*(line-i)-1; j++)printf("*");printf("\n");}return 0;</span><span style="font-size:18px;">}</span>