C++ 互换指针指向内存结果

1. 互换指针指向内存结果

将命令参数前两个值在主存中互换并输出。

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#include <iostream>
#include "mySwap.hpp"

int main(int argc, char** argv)
{
        std::cout<<"Origin info is: "<<std::endl;
        std::cout<<"a: "<<argv[1]<<" \tb: "<<argv[2]<<std::endl;
        mySwap(argv[1],argv[2]);
        std::cout<<"Has been swaped info is: "<<std::endl;
        std::cout<<"a: "<<argv[1]<<" \tb: "<<argv[2]<<std::endl;

        return 0;
}

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void mySwap(char* &a,char*  &b)
{
        char* temp;
        temp = a;
        a=b;
        b=temp;
}

运行结果

结果1

2. 简单变量交换

下面提供了一个简单的变量互换代码。

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#include<iostream>
void swap(int &a,int &b)
{
        int temp = a;
        a= b;
        b = temp;
}

int main()
{
        int a,b;
        std::cin>>a>>b;
        std::cout<<"Original info is "<<std::endl;
        std::cout<<"a: "<<a<<" b: "<<b<<std::endl;
        swap(a,b);
        std::cout<<"Has been swaped info is "<<std::endl;
        std::cout<<"a: "<<a<<" b: "<<b<<std::endl;
        return 0;
}

运行结果

结果2