蛇形填数

#include<stdio.h>int main(){    int a[100][100]={0};    int k,m,n,i,j;    scanf("%d",&n);    m=n/2-1;    i=0;    j=n-1;    for (k=1;k<=n*n;k++)    {        a[i][j]=k;        if (j==n-1 && i<n-1)            {i++;continue;}        if (i==n-1 && j >0)            {j--; continue;}        if (i>0 && j == 0)            {i--; continue;}        if (i==0 && a[i][j+1]==0)            {j++; continue;}        if (j>m && a[i+1][j]==0 && a[i][j+1]!=0)            {i++; continue;}        if (i>m && a[i][j-1]==0)            {j--; continue;}        if (j<=m && a[i-1][j]==0)            {i--; continue;}        if (i<=m && a[i][j+1]==0)            {j++; continue;}    }    for (i=0;i<n;i++)    {        for (j=0;j<n;j++)            printf("%d ",a[i][j]);        printf("\n");    }    return 0;}