Eroare de compilare: user.cpp:1:21: error: fstream.h: No such file or directory user.cpp:2:22: error: iostream.h: No such file or directory user.cpp:4:20: error: vector.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:7: error: ‘ifstream’ was not declared in this scope user.cpp:7: error: expected ‘;’ before ‘f’ user.cpp:8: error: ‘ofstream’ was not declared in this scope user.cpp:8: error: expected ‘;’ before ‘g’ user.cpp:11: error: ‘vector’ was not declared in this scope user.cpp:11: error: expected primary-expression before ‘int’ user.cpp:11: error: expected ‘;’ before ‘int’ user.cpp:14: error: ‘f’ was not declared in this scope user.cpp:18: error: ‘val’ was not declared in this scope user.cpp:21: error: ‘val’ was not declared in this scope user.cpp:24: error: ‘sum’ was not declared in this scope user.cpp:26: error: ‘sum’ was not declared in this scope user.cpp:26: error: ‘sort’ was not declared in this scope user.cpp:28: error: ‘val’ was not declared in this scope user.cpp:42: error: ‘g’ was not declared in this scope user.cpp:57: error: ‘g’ was not declared in this scope