How to fix GCC error: implicit instantiation of undefined template 'std::basic_stringstream<char>'
Problem:
When trying to compile your C++ application, you see an error message such as
main.cpp:15:23: error: implicit instantiation of undefined template 'std::basic_stringstream<char>'
std::stringstream ss;
^
Solution
At the top of the file where this error occurs, add the following line:
#include <sstream>