编辑代码

#include <stdio.h>
#include<string.h>
#define maxn 200
int a[maxn][maxn];
int main () {
    int n,x,y,tot=0;
    scanf("%d",&n);
    memcpy(a,0,sizeof(a));
    tot=a[x=0][y=n-1]=1;
    while(tot<n*n){
        while(x+1<n&&!a[x+1][y]) a[x+1][y]=++tot;
        while(y-1>=0&&!a[x][y-1]) a[x][y-1]=++tot;
        while(x-1>=0&&!a[x-1][y]) a[x-1][y]=++tot;
        while(y+1<n&&!a[x][y+1]) a[x][y+1]=++tot; 
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            printf("%d",a[i][j]);
        }
        printf("\n");
    }
}