类型转换

最新推荐文章于 2025-06-03 00:51:08 发布

原创最新推荐文章于 2025-06-03 00:51:08 发布 · 103 阅读

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本文通过实例演示了C++中不同类型指针之间的强制转换过程，并解释了整型变量到浮点型变量的转换机制。展示了即使经过类型转换，原始变量的类型保持不变的特点。

/*
类型强制转换后 本身类型不变
*/
#include "stdafx.h"
#include <iostream>
#include <thread>
#include <ctime>
#include <Windows.h>
#include <typeinfo>
using namespace std;
int main()
{
	int* p1 = new int;
	void* p2;
	cout << "The type of p1 is " << typeid(p1).name() << endl;
	cout << "The type of p2 is " << typeid(p2).name() << endl;
	double* p3 = (double*)p1;
	cout << "The type of p3 is " << typeid(p3).name() << endl;

	int a = 1;
	double b = (int)a;
	cout << "The type of a is " << typeid(a).name() << endl;
	cout << "The type of b is " << typeid(b).name() << endl;
	cout << "The type of a is " << typeid(a).name() << endl;
	
}