C语言实用算法系列之行指针

代码

#include <stdio.h>

void Test(double (*a)[3])
{
    
    
	printf("sizeof(a)=%d\n", sizeof(a));
	printf("sizeof(*a)=%d\n", sizeof(*a));
	printf("sizeof(a[1])=%d\n", sizeof(a[1]));
}

void main()
{
    
    
	double ar[2][3] = {
    
     {
    
    1.0,2.1,3.2},{
    
    4.3,5.4,6.5} };

	double (*p)[3] = ar; //行指针
	int i = 0;
	while (i < sizeof(ar) / sizeof(ar[0])) // =48/24=2 行
	{
    
    
		++p; //行指针
		++i;
	}
	Test(ar);
}

运行结果