C程序设计教程与实验 实验四 吉顺如.docx

C程序设计教程与实验 实验四Sy4_1:#includemain()char ch,c1,c2;printf(Enteer a character:);ch=getchar();if(ch=a)&(ch=z);ch-=32;c1=ch-1;c2=ch+1;if(ch=A) c1=ch+25; else if(ch=Z) c2=ch-25;putchar(c1); putchar(ch);putchar(c2);putchar(n);Sy4_2:#includemain()int a,b,c,max;printf(please input three:n);scanf(%d%d%d,&a,&b,&c);max=a;if(cb)if(ca) max=c;elseif(ba) max=b;printf(%dn,max);Sy4_3：#includemain()int m;printf(input the month number:n);scanf(%d,&m);switch(m)case 1:printf(Jan);break;case 2:printf(Feb);break;case 3:printf(Mar);break;case 4:printf(Api);break;Sy4_4：#includemain()char c;scanf(%c,&c);if(c=0&c=A&c=a&c=z)printf(a-zn);elseprintf(!,.n);Sy4_5：#includemain()int a,b,d;char ch;printf(Please input a expression:);scanf(%d%c%d,&a,&ch,&b);switch(ch)case+:d=a+b;printf(%d+%d=%dn,a,b,d);break;case-:d=a-b;printf(%d-%d=%dn,a,b,d);break;case*:d=a*b;printf(%d*%d=&dn,a,b,d);break;case/:if(b=0)printf(Divisor is zeron);elseprintf(%d/%d=%fn,a,b,(float)a/b);break;default:printf(Input Oprator error!n);Sy4_6：#includemain()float a,b;printf(请主持人输入时尚手机的实际价格n);scanf(%f,&b);printf(nn请观众猜时尚手机的价格n);scanf(%f,&a);if(ab)printf(高了n);Sy4_7：#includemain()int a,b,c,sum,q,min,max;float x,p;printf(input three number:);scanf(%d%d%d,&a,&b,&c);sum=a+b+c;p=sum/3.0;q=a*b*c;max=a;if(cb)if(ca) max=c;elseif(ba) max=b;min=a;if(cb)if(ca) min=c;elseif(ba) min=b;printf(sum=%d,p=%.2f,q=%d,sum,p,q);printf(max=%d,min=%d,max,min);Sy4_8：#includemain()float x,y;printf(请输入x的值:);scanf(%f,&x);if(x5)y=0;elseif(x15)y=x-1;elsey=6*x*x-1;printf(y=%f,y);Sy4_9：#includemain()int x;printf(请输入数字:);scanf(%d,&x);switch(x)case 0:printf(Sundayn);break;case 1:printf(Mondayn);break;case 2:printf(Tuesdayn);break;case 3:printf(Wednesdayn);break;case 4:printf(Thursdayn);break;case 5