Eroare de compilare: user.c:1:20: error: iostream: No such file or directory user.c:2: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace' user.c: In function 'main': user.c:5: error: 'cin' undeclared (first use in this function) user.c:5: error: (Each undeclared identifier is reported only once user.c:5: error: for each function it appears in.) user.c:7: error: 'cout' undeclared (first use in this function)