Compilare: user.c: In function ‘main’: user.c:43:9: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [enabled by default] printf(cmmdc(A,B)); ^ In file included from /usr/include/stdio.h:934:0, from user.c:1: /usr/include/i386-linux-gnu/bits/stdio2.h:103:1: note: expected ‘const char * restrict’ but argument is of type ‘int’ printf (__const char *__restrict __fmt, ...) ^ user.c:37:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("euclid2.in", "w", stdin); ^ user.c:38:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("euclid2.out", "r", stdout); ^ user.c:40:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.c:42:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &A, &B); ^