#include <iostream> #include <limits> #include <cstdint> using namespace std; template<class T> T ala(T&& x) { x += 1; return x; } int main() { int& x = 10; cout << ala(x) << " " << x << endl; return 0; }
Standard input is empty
prog.cpp: In function ‘int main()’: prog.cpp:14:11: error: invalid initialization of non-const reference of type ‘int&’ from an rvalue of type ‘int’ int& x = 10; ^~
Standard output is empty