#include<bits/stdc++.h> using namespace std; int main(){ int a[10][10]; int i,j,n; cin>>n; //赋初值 for(i = 0;i < n;i++){ for(j = 0;j < n;j++){ a[i][j] = 1; } } //赋0 for(i = 0;i <= n / 2;i++){ a[i][n/2 - i] = 0; a[i][n/2 + i] = 0; a[n - 1 - i][n/2 - i] = 0; a[n - 1 - i][n/2 + i] = 0; } a[n/2][n/2] = 0; for(i = 0;i < n;i++){ for(j = 0;j < n;j++){ cout<<setw(3)<<a[i][j]; } cout<<endl; } return 0; } /************************************************************** Problem: 1327 User: admin Language: C++ Result: Accepted Time:9 ms Memory:2072 kb ****************************************************************/