C++ Hello World program
codeaft.cpp
#include <iostream>
using namespace std;
int main()
{
    cout<<"Hello, World!\n";

    cout<<(char)72<<(char)69<<(char)76<<(char)76<<(char)79<<(char)32<<(char)87<<(char)79<<(char)82<<(char)76<<(char)68<<(char)33<<"\n";

    cout<<"\"Hello, World!\"\n";

    cout<<"\'Hello, World!\'\n";
    return 0;
}
Output
codeaft@codeaft:~$ g++ codeaft.cpp
codeaft@codeaft:~$ ./a.out
Hello, World!
HELLO WORLD
"Hello, World!"
'Hello, World!'
codeaft@codeaft:~$
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