Borderou de evaluare (job #462356)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:7:17: error: variable ‘std::ifstream cin’ has initializer but incomplete type user.cpp:8:18: error: variable ‘std::ofstream cout’ has initializer but incomplete type user.cpp:9:5: error: expected ‘,’ or ‘;’ before ‘unsigned’ user.cpp:10:10: error: ‘n’ was not declared in this scope user.cpp:13:24: error: ‘a’ was not declared in this scope user.cpp:13:27: error: ‘b’ was not declared in this scope user.cpp:16:32: error: ‘dif’ was not declared in this scope user.cpp:20:33: error: ‘dif’ was not declared in this scope user.cpp:22:22: error: ‘dif’ was not declared in this scope user.cpp:27:19: error: ‘cp’ was not declared in this scope user.cpp:27:22: error: ‘dif’ was not declared in this scope user.cpp:30:33: error: ‘nrcif’ was not declared in this scope user.cpp:36:33: error: ‘nrcif’ was not declared in this scope user.cpp:39:22: error: ‘nrcif’ was not declared in this scope user.cpp:39:28: error: ‘maxnrcif’ was not declared in this scope user.cpp:42:33: error: ‘maxnrdif’ was not declared in this scope user.cpp:43:33: error: ‘maxnrsum’ was not declared in this scope user.cpp:47:40: error: ‘maxdif’ was not declared in this scope user.cpp:50:47: error: ‘maxnrsum’ was not declared in this scope user.cpp:51:47: error: ‘maxnrdif’ was not declared in this scope user.cpp:56:54: error: ‘maxsum’ was not declared in this scope user.cpp:59:61: error: ‘maxnrsum’ was not declared in this scope user.cpp:60:61: error: ‘maxnrdif’ was not declared in this scope