Compilare: user.cpp: In function ‘int ReadThe2NumbersAndPrepareToCalculate()’: user.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int CalculateTheSumeForThe2Numbers()’: user.cpp:59:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int WriteAnswer()’: user.cpp:70:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^