代码：

#include <iostream>
using namespace std;
int l[1001][1001];
int main() {
    int n;
    cin >> n;
    int y = 0, x = n / 2 + 1;
    l[y][x] = 1;
    for (int i = 2; i <= n * n; ++i) {
        if (y == 0 && x != n - 1) {
            y = n - 1;
            x ++;
        } else if (x == n - 1 && y != 0) {
            y = 0;
            x --;
        } else if (y == 0 && x == n - 1) {
            y ++;
        } else if (y != 0 && x != n - 1) {
        	if(l[x+1][y-1] != 0){
	            y --;
	            x ++;
	        }
	        else{
	        	y++;
			}
        }
        l[y][x] = i;
    }
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            cout << l[i][j] << " ";
        }
        cout << "\n";
    }
    return 0;
}

为什么输出是：

0 9 1
0 0 2
0 0 8

求大佬帮助TwT

Thanks♪(･ω･)ﾉ