Eroare de compilare: user.c: In function ‘euclid’: user.c:7:6: error: ‘x0’ undeclared (first use in this function) *x0 = 1; ^ user.c:7:6: note: each undeclared identifier is reported only once for each function it appears in user.c:8:6: error: ‘y0’ undeclared (first use in this function) *y0 = 0; ^ user.c:14:12: warning: unused variable ‘auxx’ [-Wunused-variable] int aux, auxx; ^ user.c:14:7: warning: unused variable ‘aux’ [-Wunused-variable] int aux, auxx; ^ user.c: In function ‘main’: user.c:31:9: warning: unused variable ‘g’ [-Wunused-variable] FILE *g = freopen("euclid3.out", "w", stdout); ^ user.c:30:9: warning: unused variable ‘f’ [-Wunused-variable] FILE *f = freopen("euclid3.in", "r", stdin); ^ user.c:33:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.c:35:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &a, &b, &c); ^