C程序设计教程与实验 实验四 吉顺如

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1、C程序设计教程与实验实验四Sy4_1:#includemain(){charch,c1,c2;printf("Enteeracharacter:");ch=getchar();if((ch>=='a')&&(ch<=='z'));ch-=32;c1=ch-1;c2=ch+1;if(ch='A')c1=ch+25;elseif(ch='Z')c2=ch-25;putchar(c1);putchar(ch);putchar(c2);putchar("");}Sy4_2:#includemain(){inta,b,c,max;p

2、rintf("pleaseinputthree:");scanf("%d%d%d",&a,&b,&c);max=a;if(c>b){if(c>a)max=c;}elseif(b>a)max=b;printf("%d",max);}Sy4_3：#includemain(){intm;printf("inputthemonthnumber:");scanf("%d",&m);switch(m){case1:printf("Jan");break;case2:printf("Feb");break;case3:printf("Mar");

3、break;case4:printf("Api");break;}}Sy4_4：#includemain(){charc;scanf("%c",&c);if(c>='0'&&c<='9')printf("0-9");elseif(c>='A'&&c<='Z')printf("A-Z");elseif(c>='a'&&c<='z')printf("a-z");elseprintf("!,@,...");}Sy4_5：#includemain(){inta,b,d;charch;printf("Pleaseinpu

4、taexpression:");scanf("%d%c%d",&a,&ch,&b);switch(ch){case'+':d=a+b;printf("%d+%d=%d",a,b,d);break;case'-':d=a-b;printf("%d-%d=%d",a,b,d);break;case'*':d=a*b;printf("%d*%d=&d",a,b,d);break;case'/':if(b==0)printf("Divisoriszero");elseprintf("%d/%d=%f",a,b,(float)a/b);break;de

5、fault:printf("InputOpratorerror!");}}Sy4_6：#includemain(){floata,b;printf("请主持人输入时尚手机的实际价格");scanf("%f",&b);printf("请观众猜时尚手机的价格");scanf("%f",&a);if(ab)printf("高了");}Sy4_7：#includemain(){inta,b,c,sum,q,min,ma

6、x;floatx,p;printf("inputthreenumber:");scanf("%d%d%d",&a,&b,&c);sum=a+b+c;p=sum/3.0;q=a*b*c;max=a;if(c>b){if(c>a)max=c;}elseif(b>a)max=b;min=a;if(cmain(){fl

7、oatx,y;printf("请输入x的值:");scanf("%f",&x);if(x<5)y=0;elseif(x<15)y=x-1;elsey=6*x*x-1;printf("y=%f",y);}Sy4_9：#includemain(){intx;printf("请输入数字:");scanf("%d",&x);switch(x){case0:printf("Sunday");break;case1:printf("Monday");break;case2:printf("Tuesday");break;case3:printf

8、("Wednesday