Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:5: error: ‘ifstream’ does not name a type user.cpp:6: error: ‘ofstream’ does not name a type user.cpp: In function ‘int main()’: user.cpp:24: error: ‘fin’ was not declared in this scope user.cpp:80: warning: operation on ‘l’ may be undefined user.cpp:80: warning: operation on ‘l’ may be undefined user.cpp:81: warning: operation on ‘l’ may be undefined user.cpp:81: warning: operation on ‘l’ may be undefined user.cpp:82: warning: operation on ‘l’ may be undefined user.cpp:82: warning: operation on ‘l’ may be undefined user.cpp:83: warning: operation on ‘l’ may be undefined user.cpp:83: warning: operation on ‘l’ may be undefined user.cpp:86: error: ‘fout’ was not declared in this scope