单选题 Another aspect of C that's worth mentioning here is that it is, to put it bluntly, a bit dangerous. C does not, in general, try hard to protect a programmer from mistakes. If you write a piece of{{U}} {{U}} 66 {{/U}} {{/U}}which will (through some oversight of yours) do something wildly different from what you intended it to do, up to and including{{U}} {{U}} 67 {{/U}} {{/U}}your{{U}} {{U}} 68 {{/U}} {{/U}}or trashing your{{U}} {{U}} 69 {{/U}} {{/U}}, and if it is possible for the{{U}} {{U}} 70 {{/U}} {{/U}}to compile it, it generally will. You wont get warnings of the form "Do you really mean to... ?" or "Are you sure you really want to... ?". C is often compared to a sharp knife :' it can do a surgically precise job on some exacting task you have in mind, but it can also do a surgically precise job of cutting off your finger. It's up to you to use it carefully.