Eroare de compilare: user.c:1:19: error: iostream: No such file or directory user.c:2:18: error: fstream: No such file or directory user.c:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace' user.c: In function 'main': user.c:10: error: 'ifstream' undeclared (first use in this function) user.c:10: error: (Each undeclared identifier is reported only once user.c:10: error: for each function it appears in.) user.c:10: error: expected ';' before 'f1' user.c:11: error: 'ofstream' undeclared (first use in this function) user.c:11: error: expected ';' before 'f2' user.c:12: error: 'f1' undeclared (first use in this function) user.c:31: error: 'f2' undeclared (first use in this function) user.c:31: error: 'endl' undeclared (first use in this function)