阅读程序写结果试题

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1、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){case1:a--;break;case2:b++;break;case3:a++;b++;}printf("a=%d,b=%d",a,b);}运行结果：a=1,b=33.（于蕾）#inc

2、ludevoidmain(){charch1='E';if(ch1>='A')ch1++;elsech1+=32;printf("ch1=%c",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",x,y);}运行结果：3,55.（王伟）#includeintmain(){inta,b,c,m;printf("Enterthreeintegers:");scanf(

3、"%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",ch3);return0;}运行结果：ch3=D7.（王伟）#includeintmain(){floatx,y;

4、scanf("%f",&x);switch((int)x/10){case0:y=1.0;printf("y=%f",y);break;case1:y=2*x+1;printf("y=%f",y);break;case2:y=3*x*x+2;printf("y=%f",y);break;default:printf("Nodefinition.");}return0;}输入：15.3<回车>运行结果：y=31.6000008.（王伟）#includeintmain(){charch1='A',ch2='B';switch(ch

5、1){case'A':switch(ch2){case'B':printf("Good!");break;case'A':printf("Better!");break;}case'B':printf("Best!");break;}return0;}运行结果：Good!Best!9．（王锋）#includevoidmain(){floatscore;score=100;if(score<60)printf("E");elseswitch((int)score/10){case10:case9:printf("A");ca

6、se8:printf("B");case7:printf("C");break;case6:printf("D");break;default:printf("Error");}}运行结果：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

7、;elseq=25+m;elseif(p)q=q+p;printf(“q=%d”,q);}运行结果：q=3512.（王锋）#includevoidmain(){inta=1,b=0;switch(a){case1:switch(b){case0:printf(“**0**”);break;case1:printf(“**1**”);break;}case2:printf(“**2**”);break;}}运行结果：**0****2**13.（宋昕）#includeintmain(){inta=2,b=7,c=5;swit

8、ch(a>0){case1:switc