Bip lyd?

Kode 

#include<iostream>  //er den ikke standard?

int main()
{
cout << "\\a"
}

Kode 

#include<iostream>  //er den ikke standard?
using namespace std;

int main()
{
cout << "\\a" << endl;
}

Kode 

#include <iostream>

int main()
{
    std::cout << "Test\\tTest" << std::endl;
    std::cout << "Test\\aTest" << std::endl;
    std::cout << "Test\\\\\\Test" << std::endl;
    std::cout << "Test\\tTest" << std::endl;
    std::cout << "Test\\"Test" << std::endl;
    std::cout << 'Test\\'Test' << std::endl;

    return 0;    
}