华中科技大学标准C语言程序设计与应用习题答案.docx

1、华中科技大学标准C语言程序设计与应用习题答案第二章一.选择题1.C2.BD3.A4.A5.D6.C7.D8.C9.A10.D11.B12.D13.C14.D15.A16.B17.A18.B100011001111二.判断题1.错2.错3.错4.错三.填空题1.B662.n1=%dnn2=%dn3.0四.计算1(1)x|y=0x002f(2)xy=0x0026(3)x&y=0x0009;(4)x+y=0xffc6(5)x=40x00022(1)6(2)50(3)1(4)16(5)1(6)203(1)0(2)1(3)1(4)4(5)8(6)14(1)12(2)0(3)1(4)27(5)1(6)6(

2、7)24(8)27(9)295(1)0(2)1(3)1(4)3(5)2五.程序分析题程序1b=20a=3600程序2第三章一.填空题1.s=62.963.(1)scanf(%c,&c);(2)c-32更好的答案：c-(a-A)2.1main()inta,b;printf(pleaseinputa&b:);scanf(%d%d,&a,&b);printf(nmaxis%dn,(ab)?a:b);2.2intmax(intx,inty);main()inta,b,c,max;printf(pleaseinputa&b&c:);scanf(%d%d%d,&a,&b,&c);max=ab?a:b;ma

3、x=cmax?c:max;printf(nmaxis%dn,max);2.3main()inti=0,sum=0;while(i=100)sum+=i;i+;printf(1+2+3+.+100=%dn,sum);2.4main()inti;inta=10,b=-3;intc;printf(%6d%6d,a,b);for(i=2;i10;i+)c=3*b+a;printf(%6d,c);a=b;b=c;printf(n);2.5main()inti;while(1)printf(pleaseinputadata(0:exit):);scanf(%d,&i);if(i=0)break;if(i%

4、2=0)printf(thedata%disaevennumber.n,i);elseprintf(thedata%disaoddnumber.n,i);2.6#includemain()inti;inta=8,b=1;intsum=0;for(i=0;i10;i+)b+=3;sum+=a;a+=b;printf(a%8db:%8dn,a,b);printf(TheSumOfIs:%dn,sum);2.7#includemain()floatx,y;printf(pleaseinputx:);scanf(%f,&x);if(x1.0)y=x;elseif(x10)y=2*x-1;elsey=3

5、*x-11;printf(y=%fn,y);2.8#includemain()longa,i,b,a1;while(1)printf(pleaseinputdata(1-99999):);scanf(%ld,&a);printf(a:%ldn,a);if(a=100000)break;i=0;a1=0;while(a!=0)b=a%10;printf(%8d,b);a/=10;i+;a1=a1*10+b;printf(ni:%lda1:%ldn,i,a1);2.9#include#include#includemain()inta,b,i,k=0;randomize();a=random(10

6、01);/*createarandomdata(0-1000)*/for(i=0;ib)k+;printf(n%d:Smaller,guessagain!n,k);elseif(ab)k+;printf(n%d:Bigger,guessagain!n,k);elseprintf(nYouguessright,congraturation!);printf(nYouhaveguessed%dtimes,k);break;if(k=20)printf(nsorry,youfailed!);2.10#includemain()inta,b,c;intnum;for(a=0;a10;a+)for(b=

7、0;b10;b+)for(c=1;c10;c+)num=a*100+b*10+c;if(num%3=0)&(a=5|b=5|c=5)printf(%8d,num);printf(nnn);2.11#includemain()inti;inta,b;printf(pleaseinputa,b:);scanf(%d%d,&a,&b);for(i=a0;i-)if(a%i=0&b%i=0)printf(Themax=%d,i);break;for(i=ab?a:b;i0;i+)if(i%a=0&i%b=0)printf(nThemin=%d,i);break;2.12#includemain()in

8、ta,k=0;printf(pleaseinputdata:);scanf(%d,&a);while(a%2=0)a=a/2;k+;printf(nthenumberoffactor(2)is%d,k);2.13main()longi,t=1;longsum=0;for(i=1;i=10;i+)t*=i;sum+=t;printf(%ld!=%ldn,i,t);printf(sum:%ldn,sum);2.14#includevoidmain()inti,x=0;for(i=9;i=1;i-)x=2*(x+1);printf(Thefirstday:%d,x);2.15#include#def

9、inePI3.141593main()floatr,h;floatv;printf(pleaseinputr,h:);scanf(%f%f,&r,&h);v=1.0/3*PI*r*r*h;printf(V=%.2f,v);2.16#include#includemain()longintsn=0;longintm=0,t=0;inta,n,i;printf(pleaseinputan:);scanf(%d%d,&a,&n);for(i=0;in;i+)m=m*10+a;sn+=m;printf(a+aa+aaa+.+aa.a=%ldnn,sn);2.17#includemain()intk;p

10、rintf(pleaseinputk:);doscanf(%d,&k);if(k=0&k=6)break;while(1);switch(k)case0:printf(Sunday.n);break;case1:printf(Monday.n);break;case2:printf(Tuesday.n);break;case3:printf(Wednesday.n);break;case4:printf(Thursday.n);break;case5:printf(Friday.n);break;case6:printf(Saturday.n);break;2.18#includemain()

11、inti;doublex,a,b=1,sum=1;printf(pleaseinputx:);scanf(%lf,&x);a=x;for(i=1;a/b=1e-6;i+)sum=sum+a/b;a=a*x;b=(i+1)*b;printf(nsum=%lf,sum);2.19#include#includemain()floata,x1,x2;printf(inputa:);scanf(%f,&a);x1=1.0;while(1)x2=1.0/2*(x1+a/x1);if(fabs(x2-x1)1e-5)break;x1=x2;printf(sqrt(a)=%f,x2);第四章写出下列程序输出

12、结果1.no1a=1no1a=0no1a=1no1a=02.a=0b=0c=0a=1b=0c=0a=2b=0c=03.main:x=5,y=1,n=1func:x=6,y=21,n=11main:x=5,y=1,n=11func:x=8,y=31,n=21第五章1.D2.D3.C4.65.CDABC6.(1)j+=2(2)ai=0&si=912.(1)0(2)str1i-str2i5.1#includeintfun();intfun()inta33,sum;inti,j;sum=0;/*error*/for(i=0;i3;i+)for(j=0;j3;j+)scanf(%d,&aij);/*er

13、ror*/for(i=0;i3;i+)sum=sum+aii;printf(sum=%dn,sum);voidmain()fun();5.2#includevoidmain(void)floatNum10;floatInput,GetNum11;inti,j;floata=6;for(i=0;i10;i+)Numi=a;a=a+7.5;Loop1:printf(PleaseinputaNumber(0-80)Input=);scanf(%f,&Input);if(Input70)=1)gotoLoop1;for(i=0;i10;i+)if(InputNumi)gotoLoop2;Loop2:f

14、or(j=0;ji;j+)GetNumj=Numj;GetNumj=Input;for(j=i;j=10;j+,i+)GetNumj+1=Numi;for(j=0;j11;j+)printf(%3.3f,GetNumj);5.3#includestdio.h#includestdlib.hmain()inta1,a2,a3,a4,a5,a6,a7,a8,a9;inta3;inti;for(;)for(i=0;i3;i+)ai=rand()%3;while(a0!=a1)&(a0!=a2)&(a1!=a2)/*getthreedifferentnumbers0,1,2*/a1=a0+1;/*di

15、vide19intothreegroups,a1a3,a4a6,a7a9*/a2=a1+1;a3=a2+1;a4=a1+3;a5=a2+3;a6=a3+3;a7=a1+6;a8=a2+6;a9=a3+6;/*makesurethateachlineandeachrowismadeupwiththreemembersindifferentgroup.*/*suchas:a9a1a5a2a6a7a4a8a3*/if(a1+a5+a9)=(a2+a6+a7)&(a1+a5+a9)=(a3+a4+a8)&(a1+a6+a8)=(a5+a7+a3)&(a1+a5+a9)=(a2+a4+a9)printf

16、(%d%d%dn%d%d%dn%d%d%dn,a9,a1,a5,a2,a6,a7,a4,a8,a3);return;5.4#includevoidmain(void)charinput1100,input2100,input3100;inti,Eng=0,eng=0,num=0,blank=0,other=0;printf(Input3rowsofcharacter,eachrowdontexceed80characters:n);gets(input1);printf(Thesecondrow:n);gets(input2);printf(Thethirdrow:n);gets(input3

17、);/*testthefirstrow*/for(i=0;i100;i+)if(input1i=0)gotoLoop1;elseif(A=input1i)&(input1i=Z)=1)Eng+;elseif(a=input1i)&(input1i=z)=1)eng+;elseif(0=input1i)&(input1i=9)=1)num+;elseif(input1i=32)blank+;elseother+;/*testthesecondrow*/Loop1:for(i=0;i100;i+)if(input2i=0)gotoLoop2;elseif(A=input2i)&(input2i=Z

18、)=1)Eng+;elseif(a=input2i)&(input2i=z)=1)eng+;elseif(0=input2i)&(input2i=9)=1)num+;elseif(input2i=32)blank+;elseother+;/*testthethirdrow*/Loop2:for(i=0;i100;i+)if(input3i=0)gotoLoop3;elseif(A=input3i)&(input3i=Z)=1)Eng+;elseif(a=input3i)&(input3i=z)=1)eng+;elseif(0=input3i)&(input3i=9)=1)num+;elseif

19、(input3i=32)blank+;elseother+;Loop3:printf(Upperenglishcharacter:%dnLowerenglishcharacter:%dnNumber:%dnBlank:%dnOthercharacters:%dn,Eng,eng,num,blank,other);5.5#includevoidmain(void)charstr180,str240;inti,j,k;/*Inputtwostring*/printf(Pleaseinputthefirststringnstr1=);gets(str1);printf(Pleaseinputthes

20、econdstringnstr2=);gets(str2);/*Gettheendofstr1*/for(i=0;i80;i+)if(str1i=0)break;/*Copystr2tostr1*/for(j=i,k=0;str2k!=0;k+,j+)str1j=str2k;str1i+k=0;puts(str1);5.6#includestructstudentcharname20;intscore;stu5,stu1;voidmain(void)inti,j;printf(Inputstudentsscoreandname(5),seperateusingthecharacterof,:n

21、);for(i=0;i5;i+)scanf(%d,%s,&stui.score,&stui.name);/*sorting*/for(i=0;i5;i+)for(j=0;jstuj+1.score)stu1=stuj;stuj=stuj+1;stuj+1=stu1;printf(Aftersotred,scoreandname:n);for(i=0;i5;i+)printf(%d,%sn,stui.score,stui.name);5.7#includemain()inta33,i,j,m,n,o,p;printf(Pleaseinputa3*3shuzu:n);for(i=0;i=2;i+)

22、for(j=0;j=2;j+)scanf(%d,&aij);for(i=0;iai1)?ai0:ai1;n=(mai2)?m:ai2;for(j=0;j=2;j+)o=(a0ja1j)?a0j:a1j;p=(oa2j)?o:a2j;if(n=p)printf(Andianis%dn,p);elseprintf(Thereisnoandian.n);5.8#includevoidmain(void)inta43,b34,i,j;for(i=0;i4;i+)for(j=0;j3;j+)scanf(%d,&aij);for(i=0;i4;i+)printf(n);for(j=0;j3;j+)prin

23、tf(%5d,aij);for(i=0;i4;i+)for(j=0;j3;j+)bji=aij;printf(n);for(i=0;i3;i+)printf(n);for(j=0;j4;j+)printf(%5d,bij);5.9#include#includevoidmain(void)charstr6;inti,j=0,m=0,n=0;gets(str);while(strj!=0)j+;for(i=j-1;i=0;i-)m=(stri-0)*(pow(8,j-i-1);n+=m;printf(shijinzhi%d,n);5.10#includevoidmain(void)charinput1100;inti,num=0,blank=0;printf(Pleaseinputarowcharacter:n);gets(input1);/*testthefirstrow*/for(i=0;i100;i+)if(input1i=0)gotoLoop;elseif(A=input1i)&(input1i=Z)=1)num+;elseif(a=input1i)&(input1i=z)=1)num+;elseif(input1i=32)blank+;Loop:printf(Character:%dnBlank:%dn,num,blank);第六章一、选择