Question

怎么用C语言输出空心正方形

Answer 1

#include<stdio.h>
main()
{
int i,j,n;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
for(j=1;j<=n-1;j++)
if(i==1;j==1||i==n)
printf(" *");
else printf(" ");
printf(" *\n");
}
}

Answer 2

#include<stdio.h>
main()
{int i,j,n;
scanf("%d",&n);
for(i=1;i<=n;i++)
{for(j=1;j<=n-1;j++)
if(i==1;j==1||i==n)
printf(" *");
else printf(" ");
printf(" *\n");}}