Compilare: user.c: In function ‘main’: user.c:23:9: warning: format ‘%c’ expects argument of type ‘char *’, but argument 2 has type ‘int *’ [-Wformat=] scanf("%c",&v[n]); ^ user.c:18:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("palindrom4.in","r",stdin); ^ user.c:19:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("palindrom4.out","w",stdout); ^ user.c:23:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&v[n]); ^