C语言实例20：二維數組

/******************
打印出一個魔方陣，所謂魔方陣提的是每一行，每一行以及對角線之和均相等。
******************/
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
    int array[16][16];
    int i, j, k, m, n;
    m = 1;

    while(m == 1)
    {
        printf("請輸入n（0 < n <15,n是奇數）\n");
        scanf("%d",&n);
        if(n != 0 && (n <= 15) && (n%2 != 0))
        {
            printf("矩陣階數是： %d\n",n);
            m = 0;
        }
    }

    for(i = 1; i <= n; i++)
        for(j = 1; j <= n; j++)
        array[i][j] = 0;
    j = n/2 + 1;
    array[1][j] = 1;
    for(k = 2; k <= n*n; k++)
    {
        i = i - 1;
        j = j + 1;
        if((i < 1) && (j > n))
        {
            i = i + 2;
            j = j - 1;
        }
        else{
            if(i < 1)
                i = n;
            if(j > n)
                j = 1;
        }
        if(array[i][j] == 0)
            array[i][j] = k;
        else{
            i = i + 2;
            j = j - 1;
            array[i][j] = k;

        }
    }
    for(i = 1; i <= n; i++)
    {
        for(j = 1; j <= n; j++)
            printf("%5d",array[i][j]);
        printf("\n");
    }
    system("pause");
    return 0;
}