超星 - 循环结构测试题 - 查题吧

单选题

#include int main (){int a, b;for (a = 1, b = 1 ; a <= 100 ; a++){if (b >= 9) break;if (b % 3 == 1){ b += 3 ;continue ;}b -= 5;}printf("%d,%d\n", a, b);return 0;}

A. 10,4
B. 4,10
C. 5,10
D. 5,11

单选题

#include void main(){ char ch;while((ch=getchar())!='\n'){ if (ch>='A'&&ch<='Z') ch=ch+32;else if (ch>='a'&&ch<='z') ch=ch-32;printf("%c",ch);}}输入：ABCdef<回车>

A. abcdef
B. abcDEF
C. ABCdef
D. ABCDEF

单选题

#include int main(){ int i, s = 0;for(i = 1; i < 10; i++){ s += i * i;if(s > 10) break;}printf("i=%d, s=%d\n", i, s);return 0;}

A. i=3, s=14
B. i=14, s=3
C. i=2, s=13
D. i=13, s=2

单选题

#include void main( ){ char k;int i;for(i=1;i<3;i++){scanf("%c",&k);switch(k){ case '0': printf("another\n");case '1': printf("number\n");}}}输入：01<回车>

A. anotheranotheranother
B. anothernumbernumber
C. anotheranothernumber
D. numbernumbernumber

单选题

#include void main(){ int a,b;for(a=1,b=1;a<=100;a++){ if(b>20) break;if(b%4==1){ b=b+4;continue;}b=b-5;}printf("a=%d\n",a);}

A. a=6
B. a=7
C. a=8
D. a=96

单选题

#include void main(){int i, j;for(i=2;i>=0;i--){ for(j=1;j<=i;j++)printf("*");for(j=0;j<=2-i;j++)printf("!");printf("\n");}}

A. **!*!!!!!
B. !!!*!!**!
C. **!!!!!!!
D. ****!!!!!

单选题

#include void main(){ int sum=0,n;scanf("%d",&n);while(n<=5){ sum+=n;n++;}printf("sum=%d",sum);}输入：1<回车>

A. sum=13
B. sum=14
C. sum=15
D. sum=16

单选题

#include int main(){ int i=10,m=0,n=0;do{ if(i%2!=0) m=m+i;else n=n+i;i--;}while(i>=0);printf("m=%d,n=%d\n",m,n);return 0;}

A. m=25,n=30
B. m=30,n=25
C. m=26,n=30
D. m=30,n=26

单选题

#include int main(){ int i,j;i=1;while(i<5){ for(j=1;j<2*i+1;j++)printf("%c",'#');printf("\n");i++;}return 0;}

A.
B.
C.
D.

单选题

#includeint main(){ int i,j,k;for(i=1;i<=4;i++){ for (j=1;j<5-i;j++)printf(" ");for(k=1;k<=i;k++)printf("*");printf("\n");}return 0;}

A. **********
B. ***************
C. ******
D. ***

2