动态二维数组

可以参照下列链接，一个大神
http://blog.youkuaiyun.com/morewindows/article/details/7664479

另一种思路，使用一维数组的访问模拟二维数组的访问

#include <stdio.h>
#include <stdlib.h>

int main() {
    int row, col;
    row = 3;
    col = 4;
    int *a;
    a = (int *)malloc(row * col * sizeof(int));

    for (int i=0; i<row; ++i) {
        for (int j=0; j<col; ++j) {
            a[i*col + j] = j+1;
        }
    }

    for (int i=0; i<row; ++i) {
        printf("%d: ", i+1);
        for (int j=0; j<col; ++j) {
            printf("%d ", a[i*col + j]);
        }
        putchar('\n');
    }

    free(a);

    return 0;
}