Borderou de evaluare (job #81283)

Eroare de compilare: user.cpp:4:1: error: expected initializer before ‘fstream’ user.cpp: In function ‘int main()’: user.cpp:8:5: error: ‘f’ was not declared in this scope user.cpp:18:10: error: ‘y’ was not declared in this scope user.cpp:23:12: error: expected unqualified-id before ‘<=’ token user.cpp:23:12: error: expected ‘;’ before ‘<=’ token user.cpp:23:12: error: expected primary-expression before ‘<=’ token user.cpp:23:16: error: ‘i’ was not declared in this scope user.cpp:23:20: error: expected ‘)’ before ‘;’ token user.cpp:23:21: error: ‘i’ was not declared in this scope user.cpp:23:24: error: expected ‘;’ before ‘)’ token user.cpp:22:9: warning: unused variable ‘nr’ [-Wunused-variable]