Compilare: user.cpp: In function ‘int p(int&)’: user.cpp:33:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int s(int&)’: user.cpp:53:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int checkstrat(int)’: user.cpp:18:1: warning: control reaches end of non-void function [-Wreturn-type] } ^