整理篇阅读程序写结果试题第四章选择结构(共20道题)1. (于蕾)#includevoidmain(){intx,y,t;x=7;y=9;if(xvoidmain(){intx=1,a=2,b=3;switch(x){case 1: a--;break;case 2: b++;break;case 3: a++;b++;}printf("\na=%d,b=%d\n",a,b);}运行结果：a=1,b=33. (于蕾)#includevoidmain(){charch1='E';if(ch1>='A')ch1++;elsech1+=32;printf("ch1=%c\n",ch1);}运行结果：ch1=F4. (于蕾)#includevoidmain(){intx,y,t;x=5;y=3;if(x>y){t=x;x=y;y=t;}printf("%d,%d\n",x,y);}运行结果：3,55. (王伟)#includeintmain(){inta,b,c,m;printf("Enterthreeintegers:");scanf("%d%d%d",&a,&b,&c);if(a<=b)m=a;elsem=b;if(c运行结果：m=216. (王伟)#includeintmain(){charch1='a',ch2='B',ch3='E';if(ch1>ch2)if(ch2>ch3)ch3++;else--ch3;printf("ch3=%c\n",ch3);return0;}运行结果：ch3=D7. (王伟)#includeintmain(){floatx,y;scanf("%f",&x);switch((int)x/10){case0:y=1.0;printf("y=%f\n",y);break;case 1: y=2*x+1;printf("y=%f\n",y);break;case 2: y=3*x*x+2;printf("y=%f\n",y);break;default:printf("Nodefinition.\n");}return0;}输入：15.3<回车>运行结果：y=31.600000整理篇8. (王伟)#includeintmain(){charch1='A',ch2='B';switch(ch1){case'A':switch(ch2){case'B':printf("Good!\n");break;case'A':printf("Better!\n");break;}case'B':printf("Best!\n");break;}return0;}运行结果：Good!Best!9. ．(王锋)#includevoidmain(){floatscore;score=100;if(score<60)printf("E\n");elseswitch((int)score/10){case10:case9:printf("A\n");case8:printf("B\n");case7:printf("C\n");break;case6:printf("D\n");break;default:printf("Error\n");}}运行结果：整理篇ABC10. (王锋)#includevoidmain(){inti=0，a=2；if(i==0)printf(“**”)；elseprintf(“$$”)；printf(“*”)；}运行结果：***11. (王锋)#includevoidmain(){intm=10,n=0,p=4,q=20;if(m)if(n)q=15-m;elseq=25+m;elseif(p)q=q+p;printf(“q=%d\n”,q);}运行结果：q=3512. (王锋)#includevoidmain(){inta=1,b=0;switch(a){case 1: switch(b){case0:printf(“**0**”);break;case1:printf(“**1**”);break;}case 2: printf(“**2**”);break;}}运行结果：**0****2**13. (宋昕)#includeintmain(){inta=2,b=7,c=5;switch(a>0){case1:switch(b<0){case 1: printf("@");break;case 2: printf("!");break;}case0:switch(c==5){case 3: printf("*");break;default:printf("#");break;}default:printf("&");}printf("\n");return0;}运行结果：*&14. (宋昕)#includeintmain(){inta=0,b=1,c=0,d=20;if(a)d=d-10;elseif(!b)if(!c)d=15;elsed=25;printf("d=%d\n",d);return0;}运行结果：d=2015. (宋昕)#includeintmain(){inta=1;switch(a){case0:printf("**0**");break;case1:printf("**1**");break;case2:printf("**2**");break;}return0;}运行结果：**1**16. (宋昕)#includeintmain(){intx,y;scanf("%d",&x);y=x>12?x+10:x-12;printf("%d\n",y);return0;}输入：12<回车>运行结果：017. (宋昕)#includeintmain(){floatx,y;charop;doubler;scanf("%c%f%f",&op,&x,&y);switch(op){case'+':r=x+y;break;case'-':r=x-y;break;case'*':r=x*y;break;case'/':r=x/y;break;}printf("%.1f",r);return0;}输入：3.5<回车>运行结果：0.618. (王勇超)#include"stdio.h"voidmain(){inta=7;if(a>9||a<10)a=a/3;elsea=a%3;printf("a=%d",a);}运行结果：a=219. (王勇超)#includevoidmain(){inta=20;switch(a%3){case0:printf("0");case 1: printf("1");case 2: printf("2");default:printf("3");}printf("4");}运行结果：23420. (王勇超)#includevoidmain(){inta=2,b=5,c=8,t;if(avoidmain(){intnumber,digit;number=1234;while(number!=0){digit=number%10;printf("%d",digit);number=number/10;}}运行结果：43212. (于蕾)#include#defineN5voidmain(){inti;for(i=1;ivoidmain(){inti,s,x;s=0;x=15;for(i=1;i<=5;i++)if(x%i==0)s=s+i;printf("i=%d,s=%d\n",i,s);}运行结果：i=6,s=94. (于蕾)#includevoidmain(){intcounter=1;while(counter<=5){printf("%d\n",counter);counter++;}}运行结果：123455. ．(王伟)#includeintmain(){inti,sum,m,a;sum=0;m=5;for(i=0;i<=3;i++){scanf("%d",&a);if(a>m)sum+=a;}printf("sum=%d\n",sum);return0;}输入：21083<回车>运行结果：sum=186. (王伟)#includeintmain(){inti,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");}return0;}运行结果：**********7. (王伟)#includeintmain(){inti,j;i=1;while(i<5){for(j=1;j<2*i+1;j++)printf("%c",'#');prin。
