#include <iostream> using namespace std; void foo(int & val){ return; } int main() { foo(4); return 0; }
Standard input is empty
prog.cpp: In function 'int main()':
prog.cpp:9:7: error: invalid initialization of non-const reference of type 'int&' from an rvalue of type 'int'
foo(4);
^
prog.cpp:4:6: note: initializing argument 1 of 'void foo(int&)'
void foo(int & val){
^
Standard output is empty