The C++ swap() member function program example

 

Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows XP Pro SP2

Header file: Standard

Additional library: none/default

Additional project setting: Set project to be compiled as C++

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C++ Code (/TP)

Other info: none

To do: Using the swap() member function to exchange the arrays of characters of two strings in C++ programming

To show: How to use the C++ swap() member function to exchange the arrays of characters of two strings in C++ programming

 

// the C++ swap() member function program example

#include <string>

#include <iostream>

using namespace std;

 

int main(void)

{

// declaring an object of type basic_string<char>

string str1("StringOne");

string str2("StringTwo");

cout<<"Before swapping string str1 and str2:"<<endl;

cout<<"str1 string is = "<<str1<<endl;

cout<<"str2 string is = "<<str2<<endl;

 

swap(str1, str2);

cout<<"\nOperation: swap(str1, str2)"<<endl;

cout<<"After swapping string str1 and str2:"<<endl;

cout<<"str1 string is = "<<str1<<endl;

cout<<"str2 string is = "<<str2<<endl;

 

return 0;

}

 

Output example:

 

Before swapping string str1 and str2:

str1 string is = StringOne

str2 string is = StringTwo

 

Operation: swap(str1, str2)

After swapping string str1 and str2:

str1 string is = StringTwo

str2 string is = StringOne

Press any key to continue . . .

 

 

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