Compilare: user.cpp: In function ‘int main()’: user.cpp:47:15: warning: unused variable ‘p’ [-Wunused-variable] int i,j,k,p,y,okk; ^ user.cpp: In function ‘int Cost(int, int, char*, char*)’: user.cpp:43:1: warning: control reaches end of non-void function [-Wreturn-type] } ^