Eroare de compilare: user.c:2:18: error: conio.h: No such file or directory user.c: In function 'main': user.c:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'long' user.c:6: error: 'rt' 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:7: error: 'fout' undeclared (first use in this function) user.c:7: error: 'wt' undeclared (first use in this function) user.c:8: error: 'a' undeclared (first use in this function) user.c:9: error: 'b' undeclared (first use in this function)