下面的一段C程序中，循环体语句______退出循环。unsignedcharn；inttotal；n=50；while(n-->=0)?{total+=n；}
- A.执行49次后
- B.执行50次后
- C.执行51次后
- D.死循环，不会
正确答案及解析
正确答案
解析
本题考查C语言编程的基本知识。在本题中需注意unsigned char的用法，因为n为无符号整型，永远不会为负数，所以循环语句会陷入死循环，不会退出循环。在实际的软件编程中一定要小心判断条件是否可达到。
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