Eroare de compilare: user.c:1:20: error: fstream.h: No such file or directory user.c: In function 'main': user.c:7: error: 'ifstream' undeclared (first use in this function) user.c:7: error: (Each undeclared identifier is reported only once user.c:7: error: for each function it appears in.) user.c:7: error: expected ';' before 'q' user.c:8: error: 'ofstream' undeclared (first use in this function) user.c:8: error: expected ';' before 'w' user.c:9: error: 'cin' undeclared (first use in this function) user.c:22: error: 'w' undeclared (first use in this function) user.c:27:2: warning: no newline at end of file