#include <stdio.h>
#include <conio.h>
main()
{
    int a[3][4]={1,2,3,4,5,6,7,8,9,10,11,12};
    int *p,(*pt)[4],i,j;
    printf("The array is:");
    for(p=a[0];p<a[0]+12;p++)
    {
        if((p-a[0])%4==0)
        printf("\n");
        printf("%4d",*p);
    }
    printf("\n");
    printf("Please input the position like:i=,j=\n");
    scanf("i=%d,j=%d",&i,&j);
    printf("a[%d][%d]=%d\n",i,j,*((*pt+i)+j));
    getch();
    return 0;
}

输入i,j后运行出错终止。

pt没给初值

#include <stdio.h>
#include <conio.h>
main()
{
    int a[3][4] = { 1,2,3,4,5,6,7,8,9,10,11,12 };
    int *p, (*pt)[4], i, j;
    printf("The array is:");
    for (p = a[0]; p<a[0] + 12; p++)
    {
        if ((p - a[0]) % 4 == 0)
            printf("\n");
        printf("%4d", *p); 
    }
    pt = a;
    printf("\n");
    printf("Please input the position like:i=,j=\n");
    scanf("i=%d,j=%d", &i, &j);
    printf("a[%d][%d]=%d\n", i, j, *(*(pt + i) + j));
    _getch();
    return 0;
}

结果不正确，例如输入i=2,j=2,结果为5.

知道了括号打错了！谢谢