Eroare de compilare: user.cpp:1:21: error: fstream.h: No such file or directory user.cpp: In function ‘int intr1(int, int, int)’: user.cpp:18: warning: unused variable ‘n’ user.cpp: In function ‘int main()’: user.cpp:42: error: ‘ifstream’ was not declared in this scope user.cpp:42: error: expected ‘;’ before ‘f’ user.cpp:43: error: ‘ofstream’ was not declared in this scope user.cpp:43: error: expected ‘;’ before ‘g’ user.cpp:44: error: ‘f’ was not declared in this scope user.cpp:51: error: ‘g’ was not declared in this scope user.cpp:53: error: ‘g’ was not declared in this scope user.cpp:55: error: ‘g’ was not declared in this scope