以下程序段的描述,正确的是()。x=-4;do{x=x*x;}while(!x);
A. 是死循环
B. 循环执行两次
C. 循环执行一次
D. 有语法错误
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对下列两个语句Ⅰ和Ⅱ描述正确的是()。Ⅰ.while(1)Ⅱ.for(;;)
A. 都是无限循环
B. Ⅰ是无限循环,Ⅱ错误
C. Ⅰ循环一次,Ⅱ错误
D. 以上答案都错
下面程序的运行结果是()。int main(){int a=1,b=10;do{b-=a;a++;}while(b--<0);printf("a=%d,b=%d\n",a,b);return 0;}
A. a=3,b=11
B. a=2,b=8
C. a=1,b=-1
D. a=4,b=9
You want your stand to look at all times.
A. professor
B. professional
C. professionally
D. profession
If you the computers while the stand is being painted, they will not get damaged.
A. tide up
B. provided with
C. cover up
D. set up