C++ exception handling is built upon three keywords: try, catch, and throw.

throw

Any data type.

if(true) throw "404";

throw 404;

try-catch

concrete data type

try{
    throw 404;
}catch(int x){
    cout << x << endl;
}

every data type

... is indeed the special syntax, not the pseudo code.

try{
    throw 404;
}catch(...){
    cout << x << endl;
}