
计算机程序设计第五章
Quiz
•
Computers
•
University
•
Practice Problem
•
Hard
zaky zhang
Used 3+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下叙述正确的是___。
do-while语句构成的循环不能用其它语句构成的循环来代替
do-while语句构成的循环只能用break语句退出
用do-while语句构成的循环,在while后的表达式为非零时结束循环
用do-while语句构成的循环,在while后的表达式为零时结束循环
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下程序的执行结果是___。
main()
{ int x=23;
do{ printf("%d",x--); }while(!x);
}
321
23
不输出任何内容
陷入死循环
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有以下程序段,输出结果是___。
int x=3;
do { printf("%d ",x-=2); }while(!(- -x));
1
3 0
1 -2
死循环
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下程序段,while循环执行的次数是___。
int k=0;
while(k=1) k++;
无限次
有语法错误
一次也不执行
执行1次
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列语句中,能正确输出26个英文字母的是___。
for(a='a';a<='z';printf("%c",++a));
for(a='a';a<='z';) printf("%c",a);
for(a='a';a<='z';printf("%c",a++));
for(a='a';a<='z';printf("%c",a));
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
对于下面的for循环语句,可以断定它执行___次循环。
for(x=0,y=0;(y!=67)&&(x<5);x++) printf("----");
无限
不定
5次
4次
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当执行以下程序时,___。
int a=1;
do{ a=a*a; }while(!a);
循环体将执行1次
循环体将执行2次
循环体将执行无限次
系统将提示有语法错误
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