Cpp-learning/指针1/2、指针所占用内存空间.cpp

#include <iostream>

//指针也是种数据类型，那么这种数据类型占用多少内存
//在32位操作系统下，指针占用4个字节内存空间
//在64位操作系统下，指针占用8个字节内存空间

int main()
{
	//指针所占的内存空间大小

	int a = 10;
	//int* p;
	//p = &a;

	int * p = &a;

	
	std::cout << "sizeof (int*) = " << sizeof(int *) << std::endl;
	std::cout << "sizeof (int*) = " << sizeof(float *) << std::endl;
	std::cout << "sizeof (int*) = " << sizeof(double *) << std::endl;
	std::cout << "sizeof (int*) = " << sizeof(char *) << std::endl;


	system("pause");

	return 0;
}