Compiling Linux ubuntu compiling error "to_string" is not a member of "std"

[Morcega Negra]

The same source in windows compiles normal, but in linux it gives this problem

 

[rwxsu]

You need to specify the C++ version, or make your own to_string function using std::stringstream.

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

"to_string" isn't a member of "std"?

Okay, so I have tmp.cpp: #include <string> int main() { std::to_string(0); return 0; } But when I try to compile I get: $ g++ tmp.cpp -o tmp tmp.cpp: In function ‘int main()’: tmp...

stackoverflow.com

to_string is not a member of std, says g++ (mingw)

I am making a small vocabulary remembering program where words would would be flashed at me randomly for meanings. I want to use standard C++ library as Bjarne Stroustroup tells us, but I have

stackoverflow.com

 

[Infernum]

You need to specify the C++ version, or make your own to_string function using std::stringstream.

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

"to_string" isn't a member of "std"?

Okay, so I have tmp.cpp: #include <string> int main() { std::to_string(0); return 0; } But when I try to compile I get: $ g++ tmp.cpp -o tmp tmp.cpp: In function ‘int main()’: tmp...

stackoverflow.com

to_string is not a member of std, says g++ (mingw)

I am making a small vocabulary remembering program where words would would be flashed at me randomly for meanings. I want to use standard C++ library as Bjarne Stroustroup tells us, but I have

stackoverflow.com

Should wrap that to_string fix inside std namespace to avoid manually changing each instance of std::to_string to to_string

 

[Morcega Negra]

Should wrap that to_string fix inside std namespace to avoid manually changing each instance of std::to_string to to_string

Thanks for the tips, but you do not even know where to start.

 

[hans henrik]

missing std::to_string means you're missing

#include <string>

at the top of the file. add that and the compile error should be gone. these errors often occur because compilers often add stuff like <string> when including other stuff. for example in g++ 7.3.0, if you add #include <vector> then you can also use std::array without including <array>, but code that only includes <vector> to use std::array is non-portable, and the code may not compile on another compiler (like MSVC, for instance)... and i consider this behavior in g++ A BUG. (but the gcc devs does not, as the c++ specs technically does not forbid it. >.<)

for example, this compiles on g++ BY MISTAKE:

#include <vector>
// un-comment this to make the code portable: #include <array>
int main(){
    std::array<int,5> arr;
    return 0;
}

and probably does not compile on other compilers like msvc / icc / sun/Borland, where i expect people to get the error "array is not a member of std", for the same reason you're getting to_string is not a member of std here.