C++ adding an integer to a string without to_string

Question

What I want to do is this:

int num = 10;
string message = "something something " + num;
cout<<message<<endl;

the output would be:  something something 10

The compiler I'm being forced to use is an outdated version of GCC, and does not have C++ 11 support, which means to_string will not work.

Is string stream the only way? If so, how would I use it in this case to produce the least amount of code?

just use cout<<message<<num<<endl; in this case? And yes, stringstream is probably the easiest general solution, others exist tho. — AliciaBytes
– AliciaBytes, Commented Apr 1, 2014 at 1:44
@RaphaelMiedl this isn't an exact example. In reality, I want to return message to a caller function, however string stream seems to be the way to go. — Delliardo
– Delliardo, Commented Apr 1, 2014 at 1:50

Tony Delroy · Accepted Answer · 2014-04-01 01:45:02Z

3

You can write your own to_string:

template <typename T>
inline std::string to_string(const T& t)
{
    std::ostringstream oss;
    oss << t;
    return oss.str();
}

answered Apr 1, 2014 at 1:45

Tony Delroy

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