Compilare: user.c:58:1: warning: return type defaults to ‘int’ [enabled by default] pune_in_coada(int nod) ^ user.c:77:1: warning: return type defaults to ‘int’ [enabled by default] scoate_din_coada() ^ user.c: In function ‘citire’: user.c:23:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("bfs.in","r",stdin); ^ user.c:24:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("bfs.out","w",stdout); ^ user.c:25:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&s); ^ user.c:31:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^ user.c: In function ‘pune_in_coada’: user.c:75:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘scoate_din_coada’: user.c:87:1: warning: control reaches end of non-void function [-Wreturn-type] } ^