题目描述

找不出下面两种错误

样例

#include <iostream>
#include <algorithm>

using namespace std;

int n;

int main()
{
    while (cin >> n)
    {
        for (int i = 0; i < n; i ++ )
        {
            for (int j = 0; j < n; j ++ )
                cout << abs(i - j) + 1 << ' ';  // 规律

            cout << endl;
        }

        if (n) cout << endl;
    }

    return 0;
}  

//1
#include<stdio.h>
#include<math.h>
int main()
{
    int n,i,j;
    int a[100][100];
    scanf("%d",&n);
    while (n)
    {
         for(int i=0;i<n;i++)
         {
            for(int j=0;j<n;j++)
            {
                a[i][j]=abs(i-j)+1;
                printf("%d ",a[i][j]);
            }
            printf("\n");
        }
        printf("\n");

    }
    return 0;
}
//2
#include<stdio.h>
int main()
{
    int n;
    int a[100][100];
    scanf("%d",&n);
    while (n)
    {
        for (int i = 0; i < n; i++)
        {
            a[i][0] = i + 1;//第一行
            a[0][i] = i + 1;//第一列
        }
        for (int i = 1; i < n; i++)
        {
            for (int j = 1; j < n; j++)
            {
                a[i][j] = a[i - 1][j - 1];//其他位置，a[i][j] = a[i - 1][j - 1]
            }
        }
        for (int i = 0; i < n; i++)//输出矩阵
        {
            for (int j = 0; j < n; j++)
            {
                printf("%d ",a[i][j]);
            }
            printf("\n");
        }
        printf("\n");

    }
    return 0;
}