c++换行符有哪些

#include <iostream>

using namespace std;   

int main() 

{ 

    cout << "this is the first line\n"; 

    cout << "this is the second line\r"; 

    cout << "this is the third line\n"; 

    cout << "this is the fouth line\r"; 

    cout << "this is the fifth line\n";

    cout<<"First"<<"\n"<<"Second"<<endl;

    cout<<"First123"<<"\r"<<"Second"<<endl; 

    cout<<"这是换"<<endl<<"行符";

    return 0; 

}

this is the first line

this is the third linee

this is the fifth line

First

Second

Second23

这是换

行符

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