Borderou de evaluare (job #194772)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9:16: error: ‘date’ was not declared in this scope user.cpp:10:5: error: expected ‘,’ or ‘;’ before ‘ofstream’ user.cpp:12:8: error: ‘a’ was not declared in this scope user.cpp:12:10: error: ‘b’ was not declared in this scope user.cpp:14:13: error: ‘operatie’ was not declared in this scope user.cpp:14:22: error: expected ‘;’ before ‘posibila’ user.cpp:15:5: error: expected ‘}’ before ‘else’ user.cpp:16:13: error: ‘operatie’ was not declared in this scope user.cpp:16:22: error: expected ‘;’ before ‘imposibila’ user.cpp: At global scope: user.cpp:18:5: error: ‘cout’ does not name a type user.cpp:19:5: error: ‘cout’ does not name a type user.cpp:21:5: error: expected unqualified-id before ‘return’ user.cpp:22:1: error: expected declaration before ‘}’ token