Compilare: user.cpp: In function ‘int caz1(int&, int&, int&, std::vector<int>*, std::vector<int>*, std::vector<int>*)’: user.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int caz2(int&, int&, int&, std::vector<int>*, std::vector<int>*, std::vector<int>*)’: user.cpp:37:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int caz3(int&, int&, int&, std::vector<int>*, std::vector<int>*, std::vector<int>*)’: user.cpp:48:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:90:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<R.size();j++) ^ user.cpp:93:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<G.size();j++) ^ user.cpp:96:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<B.size();j++) ^