Eroare de compilare: user.c:1:21: error: iostream.h: No such file or directory user.c:2:20: error: fstream.h: No such file or directory user.c:4: warning: return type of 'main' is not 'int' user.c: In function 'main': user.c:5: error: 'ifstream' 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:5: error: expected ';' before 'x' user.c:6: error: 'ofstream' undeclared (first use in this function) user.c:6: error: expected ';' before 'y' user.c:8: error: 'x' undeclared (first use in this function) user.c:19: error: 'y' undeclared (first use in this function)