Compilare: user.c: In function ‘main’: user.c:105:1: warning: format ‘%s’ expects argument of type ‘char *’, but argument 2 has type ‘char (*)[204]’ [-Wformat=] scanf("%s",&s); ^ user.c:103:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] {freopen("free.in","r",stdin); ^ user.c:104:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("free.out","w",stdout); ^ user.c:105:6: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&s); ^ user.c: In function ‘div2’: user.c:78:6: warning: ‘b[1]’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(!b[1]) ^