“to_string” isn't a member of “std”?

Question

Okay, so I have

tmp.cpp:

#include 

int main()
{
    std::to_string(0);
    return 0;
}

But when I try to compile I g

Answer 1

you may want to specify the C++ version with

g++ -std=c++11 tmp.cpp -o tmp

I don't have gcc 4.8.1 at hand , but in older versions of GCC, you can use

g++ -std=c++0x tmp.cpp -o tmp

At least gcc 4.9.2 I believe also support part of C++14 by specifying

g++ -std=c++1y tmp.cpp -o tmp

Update: gcc 5.3.0 (I am using the cygwin version) supports both -std=c++14 and -std=c++17 now.