華中科技大學標準C語言程序設計與應用習題答案

1、第二章一選擇題I. C2. BD3.A4. A5. D6. C7.D& C9. A10. DII. B12. D13. C14. D15. A 16. B17. A18.B100011001111二判斷題1錯2錯3錯4錯三填空題1. B662. nl=%dnn2=%dn3.0四計算1(1) x：y=0x002f(2) xy二0x0026 x&y二0x0009;(4) *x+y=0xffc6(5) x二40x0002 2(1)6(2)501(4) -161(6)2030114814(1)1201(4)27mainOinti=O, sum=0: while (i=100)sum+=i;i+；pri

2、ntf(1+2+3+100二drr, sum);2.4 mainOinti;inta=10, b二一3; intc：printf (%6d%6d, a, b); for(i=2：i10：i+)c=3*b+a;printf(%6d,c);a=b;b=c;printf rn);2. 5mainOinti; while printf(pleaseinputadata(O:exit):)； scanf (%d, &i);辻(i=0)break;if(i%2=0)printf (thedata%disaevennumber. n i); elseprintf (thedata%disaoddnumber

3、. n，i);2.6 #includemainOinti;inta=8, b二1;intsum=0：for(i二0;imainOf loatx, y ：printf (pleaseinputx:); scanf(%f, &x):辻(xl. 0)y=x;else辻(xmainOTonga, i, b, al; while (1)printf(pleaseinputdata (1-99999):); scanf(%ld, &a);printf(a:%ldrr, a);辻(a=100000)break;i 二0;al 二 0;while(a!=0)b=a%10;printf(%8d,b); a/=1

4、0：i+；al=al*10+b：printf(ni:%ld81:%ldrr, i, al)2.9#include#includetinie h#includestdlib h mainOinta, b, i, k=0;randomize ();a=random(1001):/createarandomdata(0-1000)*/for(i=0：ib)k+;printf(n%d:Smaller, guessagain!rT,k);elseif (a mainOinta, b, c：intnum：for (a=0：a10：a+)for(b=0：b10;b+)for (c=l：c mainOinti

5、;inta, b：printf (pleaseinputa, b:); scanf(%d%d, &a, &b);for(i=a0：i)if (d%i=0&b%i 二二 0)printf(Themax=%d, i);break;for (i=ab?a:b：i0：i+)if (i%a=0&i%b 二二 0)printf (nThemiri二%d, i);break：2. 12#include mainOinta, k=0;printf Cpleaseinputdata:)； scanf (%d, &a);while (a%2=0)a=a/2：k+;printf (Anthenumberoffact

6、or (2) is%d，k);2. 13 mainOlongi,t=l;longsum=0： for(i=l：i voidmainOinti, x=0;for(i=9：i=l;i)X二2*(x+l);printf CThefirstday:%d x);2. 15#includestdio h #definePI3 141593 mainOfloatr, h：floatv：printf (pleaseinputr, h:); scanf(%f%f, &T,&h);V二 1 0/3*PI*r*r*h; printf(V=%. 2r, v):2. 16#include #includem8th h

7、mainOlongintsn=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 (8+d8+888+ +8aa=%ldnn，sn): 2. 17#include mainOintk：printf (pleaseinputk:)；doscanf(%d, &k); 辻(k=0&k mainOinti:doublex, a, b=l, sum=l; printf (pleaseinputx:); scanf&x);a=x;for

8、 (i二1;a/b=le-6;i+)sum二sum+a/b;a=d*x;b 二(i+i)*b;printf (nsuni=%lf, sum);2. 19#includestdio h#include mainOf loata, xl, x2：printf Cinputa:); scanf (%f, &a);xl=1.0：while (1)x2=L0/2*(xl+a/xl):if (fabs(x2-xl)le-5) break;xl二x2;printf (sqrt (a)=%f, x2);第四章寫岀下列程序輸出結果1. nola=lnola=0nola=lnola=02.a二Ob二Oc二0a二l

9、b二Oc二0 a=2b=0c=03.main:x=5, y二1, n二1 func:x二6, y二21, n二 11 main:x=5, y二1, n二11 func:x=8, y二31, n二21第五章1. D2. D3. C 4.65. CDABC6. j+二2(2)aiO &si二912. (l)0 (2)strli-str2i5. 1#include intfunO ;intfunOinta33, sum：inti, j:sum二0;/*error*/ for(i=0：i3：i+)for(j=0：j3：j+)scanf(%d, &aij):/*error*/for(i=0：i3：i+)

10、 sum=sum+ai i: printf (sum二drr, sum);voidmainO5.2 #include voidmain(void)floatNumElO;floatlnput, GetNumll; inti, j:floata二6;for(i=0;i10;i+)Numi二a;a=a+7. 5：Loopl :printf (PleaseinputaNumber (0-80) Input二); scanf(%f, &Input);if(Input70)=l) gotoLoopl;for(i=0;i10;i+)if(InputNumi) gotoLoop2;Loop2:for(j二0

11、:ji：j+)GetNumj=Numj;GetNumj=Input;for(j=i：j=10;j+, i+)GetNumj+l=Numi:for(j=0：jll：j+) printf (%3. 3f, GetNumEj);5. 3#includestdio. h#includestdlib. hmainOintal, a2, a3, a4, a5, a6, a7, a8, a9; inta3;inti;for (:)for(i=0：i voidmain(void)charinputlElOOL input2100,inputs100: inti, Eng=0, eng=0, num二0, bl

12、ank=0, other=0;printf(Input3rowsofcharacter, eachrowdon texceedSOcharacters:n); gets (inputl);printf(Thesecondrow:n)；gets (input2);printf CThethirdrow: n9 ;gets (input3);/*testthefirstrow*/for(i=0：i100：i+)if (inputli= 0) gotoLoopl;elseif (* A* =inputl(input 1Z* )=1)z)=l)Eng+;elseif (* a =inputli)&(i

13、nputliJ eng+;elseif ( o =iriputli)&(inputli二9 )1) num+;elseif (inputl i=32)blank+;elseother+;/*testthesecondrow*/Loopl:for(i二0;i100;i+)if(input2i= 0)gotoLoop2;elseif(A =iriput2i)&(iriput2iW )=1)Eng+;z)=l)elseif (* a* =input2i)&(input2i=* eng+;elseif (* 0* =input2i)&(input2i=* 9* )=1) num+;elseif (in

14、put2i=32)blank+;elseother+;Atestthethirdrow */Loop2:for(i=0：i100：i+)if(input3i= 0)gotoLoopS;elseif (* A* =input3i)&(inputsT )=1)Eng+;二input3i)&(input3iz )=1)elseif (* aeng+;elseif (* 0* voidmain(void)charstrl80L str240; inti, j, k：/*Inputtwostring*/printf (Pleaseinputthefirststringnstrl=)； gets (str

15、l);printf (Pleaseinputthesecondstringnstr2=)； gets (str2):/*Gettheendofstr1*/for(i=0：i80;i+)if(strli= 0)break;/*Copystr2tostrl*/ for(j=i,k=0：str2k !0 ;k+, j+) strlj=str2k;strli+k= 0;puts (strl);5.6#include structstudentcharname20;intscore：stu5, stul;voidmain(void)inti, j:printf CInputstudent sscorea

16、ndname(5), seperateusingthecharacterof*, :rT); for (i=0：i5： !-*-+)scanf (d, %s，&stui. score, &stui. name);/sorting*/for (i=0：i5： !-*-+)for (j=0：jstuj+l. score)stul=stuj;stuj=stuj+l;stuj+l=stul;printf (Aftersotred, scoreandname:n9 ;for (i=0：imainOinta3 3, i, j, m, n, o, p;printf (P1 easeinputa3*3shuz

17、u: )；for(i=0;i=2;i+)for(j=0;j=2;j+)scanf(%d，&aij);for(i=0;iail)?aiO:ai;n=(mai 2)?m:ai 2;for(j=0;j=2;j+)o=G0jaij)?d0j：dij；p二(oa2j)?o:a2j;if (n=p)printf (Andianis%dn p);elseprintf (Thereisnoandian. n);5.8#include voidmain(void)inta4 3, b3 4, i, j：for(i=0;i4;i+) for(j=0;j3;j+) scanf C%d&ai j);for(i=0：i

18、4：i+)printf(n);for(j=0：j3：j+)printf(%5d, aij);for(i=0;i4;i+)for (j=0：j3：j+) bjiFij;for(i=0;i3：i+)printf(n);for (j=0：j#includem8th h voidmain(void)charstr 6;inti, j二0, m=0, n二0;gets (str);while(strj!- 0)j+;m二(str i- o )*(pow(8, j-iT) n+=m;printf (shijinzhi%d，n);5.10#includestdioh voidmain(void)charin

19、putl100;inti, num=0, blank=0;printf(P1easeinputarowcharacter:n)； gets (inputl);/*testthefirstrow*/for(i=0：i100：i+)if(inputli= 0)gotoLoop;elseif (* A* =inputl(input 1 i=* Z* )=1)num+;elseif (* a =inputli)&(inputli#includestring h mainOch吐ch2 5二6937, 8254, *p2; inti, j, s二0;for(i=0：i2：i+)P i二 chi;for(

20、i=0;i* 0 ;j+二2)s二 10*s+pij- O;printf (%drr, s);4. 1#includestdio h#include mainOintcount=0：charstrlElOO, str2100:char*pl, *p2：printf(pleaseenterstringl:; gets (strl);printf (pleaseenterstring2: 0 ; gets (str2);printf(strl:%sn： strl); printf Cstr2:%sn str2); pl=strl;p2=str2;while (*pl!0&*p2!J O)if (*

21、pl+=*p2+) count+;printf (count:%dn，count);4.2#include#includestring hmainOinti, j, k：inta3;inttemp：printf (pleaseenterarraya3:); scanf(%d%d%d, &aO,&a2);for(i=0：i2：i+)k二 i;for(j=i+l：j3：j+)if (ajai) k二 j;if(k!二 i)temp二a Li. aPila k ak二tempfor(i=0：i3：i+) printf C%dt, ai);printf(n);4.3#include #include

22、ttdefineNlOO mainOchars1N, s2N, *p;intm;printf(pleaseenterstringl:); gets (si);P 二 si;printf (enterni:);scanf (%d, &m);strcpy(s2, p+m);printf (string2:%sn s2);4.4#includestdio h#includestring h mainOchars 100=iuiui012asdd90k890y098kkkkl234 *p： chardataElOO100 = 0;intcount=0：inti;P=S；/*printf(pleasee

23、nterastring:; gets(p);*/printf Csssss :%sn s);while(*p!J 0)i 二0;while (*pO &*pW)datacount i=*p;i+；p+；辻(i!二0)count+;p+；printf (count:%dn，count);for (i二0;icount;i+)printf(%sn, datai);4.5#include#defineSIZE4intdataSIZE SIZELi, j,d; intmax, m=0, n=0; for(i=0：iSIZE：i+)for(j=0：jSIZE：j+)scanf&datai j);for(

24、i=0：iSIZE：i+)for(j二i+1;jSIZE;j+)d=dataLiLjJ ；dataCi j=dataj i;dataCj i=d;max=dataO0;for(i=0;iSIZE;i+)printfCV); for(j=0：j=max)max=dataij;m=i;n二 j;printf (“nniax:%4dni:%dn:%dn，max, m, n);4.6#includestdio h#includestring hmainO1,If 丄丄1r/11 1char*pL= x test , capital 、 index 、 large 、 small 1;char*pstr

25、=p;inta, b, n=5;chartemp;for (a=0:an-l;&+)for(b二d+1;b0)ternp=pstra; pstra=pstrb; pstrb=temp：for (a=0;an;a+)printf(%sn,pstra);4.7#includestdio h#includestring h mainOchars100, temp：char*p=s;inti, length：printf (pleaseenterastring/0 ; gets(s);while(*p+!= 0*)： lengthp-sT;printf Cstringlength:%dn length

26、):for(i=0：ilength/2：i+)ternp=si;i=slength-i-l; s length-iT二 temp;第七章一，選擇題1. A2.D3.B4. D5. C6. A7. B 二程序填空題(l) ak dk(3)ak2.(1) ai；(2) j(3) i+l 或 6三.改錯題#include#includevoidswap (char*, char*) ;/*此處有錯誤，函數(shù)聲明時要加分號*/ mainOchara80, b80, c80;a,scanf (%s%s%s, a, b, c) ;/*此處有錯誤，a, b, c 分別為數(shù)組 a80, b8, c80的首地址*

27、/ 辻(strcmp (a, b) 0) swap (a, b) ;/*此處有錯誤，字符串比較應該使用strcmp函數(shù)*/if (strcmp (b, c)0) swap (b, c) ;/*此處有錯誤，原因同上*/辻(strcmp (a, b) 0) swap (a, b) ;/*原算法不能實現(xiàn)排序，需要添加此語句*/Printf(%sn%sn%srr, a, b, c);7. 3. 1#include #include voidswap(char*pstrl, char*pstr2)charp80;strcpy(p, pstrl); strcpy(pstrl, pstr2);strcpy(

28、pstr2,p);,b80二 bbb，c80二 aaamainOchara80=ccc/*scanf(%s%s%s, a,b,c) ;*/if(strcmp(a, b)0) swap (a, b);if(strcmp (b, c)0) swdp(b c);if(strcmp (a, b)0) swap (a, b);printf(%sn%sn%snnrr, a, b, c);7.4. 1#include intSquSum(int, int);mainOinta, b：intc：printf (enter2integer:): scanf (%d%d, &, &b);c=SquSum(a, b

29、);printf (a=%db:%da2+b2=%dn a, b, c);intSquSum(intx, inty)intz;z=x*x+y*y;returnz;7.4.2#includestdio h intGongYueShu(int, int); intGongBeiShu(int, int);mainOinta, b： intgbs, gys：printf (enter2integer:)； scanf(%d%d,&b);gys=GongYueShu(a, b); gbs=GongBeiShu(d, b);if (gysy)min=y：for(i=2：ix)max=y;for(i=ma

30、x;i#includestring h voidDelete_Ch(char*, char);mainOcharstr80, ch;printf Cpleaseastring/9 ; gets (str);printf (pleaseachar/); scanf (%c, &ch);Delete_Ch(str, ch);printf (snrr, str);voidDelete_Ch(char*p, charch)while(*p)if (*p=ch)strcpy (p, p+1);elsep+；7.4.5#include intIs_ShuShu(int):/*returnO:shushur

31、eturn-1:noshushu*/mainOinta, ret;printf (plsenterainteger: 9 ; scanf &a);ret=Is_ShuShu(a);if (ret=0)printf (%disashushu! !na);elseprintf (%disnotashushun a);intis ShuShu(intx)inti;for(i=2：i=x/2)returnO：7.4.6#includestdio h#includestring h voidStrCat(char*sl, char*s2)while(*sl!二0)sl+;while(*s2!= 0)*sl=*s2; sl+;s2+;*slJ Cf ;mainOch&e 200