新手问个C语言有关问题

新手问个C语言问题
我想用display函数打印指定给数组的行和列，
比如display(2,4,a)打印数组a的前两行，前4列，
可是为什么执行后是
1.1, 2.2, 3.3, 4.4, 
5.5, 6.6, 7.7, 8.8,
而不是
1.1, 2.2, 3.3, 4.4
6.6, 7.7, 8.8, 9.9

C/C++ code

#include <stdio.h>#define COLS 5void display(int a,int b,double p[a][b] );int main(void){ double a[3][COLS] = { 1.1, 2.2, 3.3, 4.4, 5.5,                       6.6, 7.7, 8.8, 9.9, 10.10,                       11.11, 12.12, 13.13, 14.14, 15.15 }; display(2,4,a); return 0;}void display(int rows,int cols,double p[rows][cols]){ int i,j; for(i=0;i<rows;i++) {  for (j=0; j<cols; j++)   printf("%g\t",p[i][j]);  printf("\n"); } putchar('\n');}

C/C++ code

#include <stdio.h>#define COLS 5void display(int rows,int cols,double (*p)[COLS]);int main(void){    double a[3][COLS] = {         {1.1, 2.2, 3.3, 4.4, 5.5},        {6.6, 7.7, 8.8, 9.9, 10.10},        {11.11, 12.12, 13.13, 14.14, 15.15}    };    display(2,4,a);    return 0;}void display(int rows,int cols,double (*p)[COLS]){    int i,j;    for(i=0;i<rows;i++)    {        for (j=0; j<cols; j++)            printf("%g\t",p[i][j]);        printf("\n");    }    putchar('\n');}//1.1     2.2     3.3     4.4//6.6     7.7     8.8     9.9//Press any key to continue