Eroare de compilare: user.c:1:22: error: iostream.h: No such file or directory user.c:2:21: error: fstream.h: No such file or directory user.c: In function ‘main’: user.c:6: error: ‘ifstream’ undeclared (first use in this function) user.c:6: error: (Each undeclared identifier is reported only once user.c:6: error: for each function it appears in.) user.c:6: error: expected ‘;’ before ‘f’ user.c:7: error: ‘ofstream’ undeclared (first use in this function) user.c:7: error: expected ‘;’ before ‘g’ user.c:9: error: ‘f’ undeclared (first use in this function) user.c:11: error: redeclaration of ‘a’ with no linkage user.c:8: note: previous declaration of ‘a’ was here user.c:11: error: redeclaration of ‘b’ with no linkage user.c:8: note: previous declaration of ‘b’ was here user.c:16: error: expected expression before ‘.’ token user.c:21: error: ‘g’ undeclared (first use in this function)