Eroare de compilare: user.c:1:20: error: fstream.h: No such file or directory user.c: In function 'main': user.c:3: error: 'ifstream' undeclared (first use in this function) user.c:3: error: (Each undeclared identifier is reported only once user.c:3: error: for each function it appears in.) user.c:3: error: expected ';' before 'f' user.c:4: error: 'ofstream' undeclared (first use in this function) user.c:4: error: expected ';' before 'g' user.c:6: error: 'f' undeclared (first use in this function) user.c:20: error: 'g' undeclared (first use in this function) user.c:25:2: warning: no newline at end of file