Compilare: user.cpp: In function ‘int efort(int)’: user.cpp:87:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:152:9: warning: unused variable ‘a’ [-Wunused-variable] int a[10] = {0, 1, 7, 4, 6, 2, 3, 5}; ^ user.cpp:153:9: warning: unused variable ‘q’ [-Wunused-variable] int q[10] = {0, 1, 2, 7, 3, 5, 4, 6}; ^