Compilare: user.cpp: In function ‘int solveb()’: user.cpp:52:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:89:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:89:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^