c++ – terminate called after throwing an instance of char const* in string function

Dont throw strings (const char*):

throw failed because of hour;

make an exception class:

class MyException : public std::exception
{
public:
    MyException(const char* err) : std::exception(err) {}       
};

and throw that:

throw MyException(failed because of hour);

and then catch it:

try
{
    // code that might throw
}
catch(const MyException& ex)
{
    // process exception
}

if an exception is thrown and not caught (your current case) then terminate is called.

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