Compilare: user.cpp: In function ‘int sum(int*, int*, int*)’: user.cpp:17:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int inm(int*, int, int*)’: user.cpp:28:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int dif(int*, int*, int*)’: user.cpp:31:15: warning: unused variable ‘neg’ [-Wunused-variable] int i,t=0,neg; ^ user.cpp:49:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^