题解 | #空心正方形图案#
空心正方形图案
https://www.nowcoder.com/practice/72347ee949dc47399186ee183632f303
#include <stdio.h> int main() { int a = 0; int arr[20][20] = {0}; int i = 0; int j = 0; while(scanf("%d",&a)!=EOF) { for(i = 0;i<a;i++) { for(j = 0;j<a;j++) { if(i==0||i==(a-1)||j==0||j==(a-1)) { arr[i][j] = '*'; printf("%c ",arr[i][j]); } else { arr[i][j] = ' '; printf("%c ",arr[i][j]); } } printf("\n"); } } }