Eroare de compilare: user.cpp: In function ‘void Back(int)’: user.cpp:11:14: error: ‘n’ was not declared in this scope if (k == n) ^ user.cpp:14:18: error: ‘s’ was not declared in this scope G << s[i] << " "; ^ user.cpp:22:21: error: ‘s’ was not declared in this scope if (s[j] == i) {ok = 0; break;} ^ user.cpp:25:17: error: ‘s’ was not declared in this scope s[k + 1] = i; ^ user.cpp: In function ‘int main()’: user.cpp:33:10: error: ‘n’ was not declared in this scope F >> n; ^