Compilare: main.cpp: In function 'int main()': main.cpp:47:21: warning: loop variable 'c' of type 'const int&' binds to a temporary constructed from type 'char' [-Wrange-loop-construct] 47 | for(const int & c : a) | ^ main.cpp:47:21: note: use non-reference type 'const int' to make the copy explicit or 'const char&' to prevent copying main.cpp:49:21: warning: loop variable 'c' of type 'const int&' binds to a temporary constructed from type 'char' [-Wrange-loop-construct] 49 | for(const int & c : b) | ^ main.cpp:49:21: note: use non-reference type 'const int' to make the copy explicit or 'const char&' to prevent copying