Compilare: user.c: In function ‘main’: user.c:20:9: warning: format ‘%s’ expects argument of type ‘char *’, but argument 2 has type ‘char (*)[40]’ [-Wformat=] {scanf("%s",&sir); ^ user.c:7:14: warning: unused variable ‘g’ [-Wunused-variable] FILE *f,*g; ^ user.c:7:11: warning: unused variable ‘f’ [-Wunused-variable] FILE *f,*g; ^ user.c:11:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("kbiti.in","r",stdin); ^ user.c:12:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("kbiti.out","w",stdout); ^ user.c:14:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.c:20:15: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] {scanf("%s",&sir); ^