Borderou de evaluare (job #415817)

Eroare de compilare: user.cpp: In function ‘int afisare(int)’: user.cpp:15:1: warning: no return statement in function returning non-void [-Wreturn-type] user.cpp: In function ‘bool valid(int)’: user.cpp:19:9: error: invalid types ‘int[int]’ for array subscript user.cpp:19:13: error: ‘s’ was not declared in this scope user.cpp:19:25: error: ‘i’ was not declared in this scope user.cpp:20:12: error: invalid types ‘int[int]’ for array subscript user.cpp: In function ‘int back(int)’: user.cpp:26:12: error: invalid types ‘int[int]’ for array subscript user.cpp:26:28: error: invalid types ‘int[int]’ for array subscript user.cpp:35:1: warning: no return statement in function returning non-void [-Wreturn-type] user.cpp: In function ‘int main()’: user.cpp:52:12: error: ‘backt’ was not declared in this scope