//#include "stdlib.h"
#include <iostream>
#include "Test.h"
Test::Test()
{
std::cout << "char 类型的空间为:" << sizeof(char) << std::endl; //1 Byte;
str = (char*)malloc(3);//栈里开辟3 Byte的空间(为啥不报错?)
std::cout << "重新看一下str的大小:" << sizeof(*str) << std::endl; //1 Byte;
//std::cout << "重新看一下str的大小:" << sizeof(*str) << std::endl; //1 Byte;
std::cout << "看一下int的大小,这里我用10000:" << sizeof(10000) << std::endl; //4 Byte;
*str = 10000; //赋值一个4 Byte的值(为啥不报错?)
std::cout << "重新看一下str的大小:" << sizeof(*str) << std::endl; //1 Byte;
//printf("调用构造函数\n");
}
Test::~Test() {
//delete str;
printf("调用析构函数\n");
}
下面是头文件
#pragma once
class Test {
public:
Test();
~Test();
private:
char* str;
};