Eroare de compilare: user.cpp:1:22: error: iostream.h: No such file or directory user.cpp:2:21: error: fstream.h: No such file or directory user.cpp: In function ‘void bt(int)’: user.cpp:82: error: ‘fstream’ was not declared in this scope user.cpp:82: error: expected ‘;’ before ‘g’ user.cpp:83: error: ‘g’ was not declared in this scope user.cpp:83: error: ‘ios’ has not been declared user.cpp:84: error: ‘endl’ was not declared in this scope user.cpp:60: warning: unused variable ‘r’ user.cpp:60: warning: unused variable ‘m’ user.cpp:60: warning: unused variable ‘x’ user.cpp: In function ‘int main()’: user.cpp:92: error: ‘fstream’ was not declared in this scope user.cpp:92: error: expected ‘;’ before ‘f’ user.cpp:95: error: ‘f’ was not declared in this scope user.cpp:95: error: ‘ios’ has not been declared