Eroare de compilare: user.c: In function ‘main’: user.c:8:2: warning: implicit declaration of function ‘freopen’ [-Wimplicit-function-declaration] freopen("euclid2.in", "r", stdin); ^ user.c:8:29: error: ‘stdin’ undeclared (first use in this function) freopen("euclid2.in", "r", stdin); ^ user.c:8:29: note: each undeclared identifier is reported only once for each function it appears in user.c:9:30: error: ‘stdout’ undeclared (first use in this function) freopen("euclid2.out", "w", stdout); ^ user.c:11:2: warning: implicit declaration of function ‘scanf’ [-Wimplicit-function-declaration] scanf("%d", &T); ^ user.c:11:2: warning: incompatible implicit declaration of built-in function ‘scanf’ [enabled by default] user.c:11:15: error: ‘T’ undeclared (first use in this function) scanf("%d", &T); ^ user.c:14:19: error: ‘A’ undeclared (first use in this function) scanf("%d %d", &A, &B); ^ user.c:14:23: error: ‘B’ undeclared (first use in this function) scanf("%d %d", &A, &B); ^ user.c:15:3: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration] printf("%d\n",euclid(A, B) ); ^ user.c:15:3: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default]