譚浩強C習(xí)題答案1

1、譚浩強C習(xí)題答案 （1-6）2006-09-21 16:12第一章1.6main()int a,b,c,max;printf("input three numbers:n");scanf("%d,%d,%d",&a,&b,&c);max=a;if(max<b)max=b;if(max<c)max=c;printf("max=%d",max);第二章2.3(1)(10)10=(12)8=(a)16(2)(32)10=(40)8=(20)16(3)(75)10=(113)8=(4b)16(4)(-617

2、)10=(176627)8=(fd97)16(5)(-111)10=(177621)8=(ff91)16(6)(2483)10=(4663)8=(963)16(7)(-28654)10=(110022)8=(9012)16(8)(21003)10=(51013)8=(520b)162.6aabb        (8)cc        (8)abc       (7)AN2.7main()char

3、 c1='C',c2='h',c3='i',c4='n',c5='a'c1+=4, c2+=4, c3+=4, c4+=4, c5+=4;printf("%c%c%c%c%cn",c1,c2,c3,c4,c5);2.8main()int c1,c2;c1=97;c2=98;printf("%c %c",c1,c2);2.9(1)=2.5(2)=3.52.109,11,9,102.12(1)24 (2)10 (3)60 (4)0 (5)0 (6)0第三章3.4main()int

4、 a,b,c;long int u,n;float x,y,z;char c1,c2;a=3;b=4;c=5;x=1.2;y=2.4;z=-3.6;u=51274;n=128765;c1='a'c2='b'printf("n");printf("a=%2d b=%2d c=%2dn",a,b,c);printf("x=%8.6f,y=%8.6f,z=%9.6fn",x,y,z);printf("x+y=%5.2f y+z=%5.2f z+x=%5.2fn",x+y,y+z,z+x);

5、printf("u=%6ld n=%9ldn",u,n);printf("c1='%c'or %d(ASCII)n",c1,c1);printf("c2='%c'or %d(ASCII)n",c2,c2);3.5575 767.856400,-789.12396267.856400,-789.123962   67.86 -789.12,67.856400,-789.123962,67.856400,-789.1239626.785640e+001,-7.89e+002A,65,10

6、1,411234567,4553207,d68765535,177777,ffff,-1COMPUTER, COM3.6a=3 b=7/x=8.5 y=71.82/c1=A c2=a/3.7   10   20Aa1.5 -3.75 +1.4,67.8/(空3)10(空3)20Aa1.5(空1)-3.75(空1)(隨意輸入一個數(shù)），67.8回車3.8main()float pi,h,r,l,s,sq,sv,sz;pi=3.1415926;printf("input r,hn");scanf("%f,%f",&

7、;r,&h);l=2*pi*r;s=r*r*pi;sq=4*pi*r*r;sv=4.0/3.0*pi*r*r*r;sz=pi*r*r*h;printf("l=%6.2fn",l);printf("s=%6.2fn",s);printf("sq=%6.2fn",sq);printf("vq=%6.2fn",sv);printf("vz=%6.2fn",sz);3.9main()float c,f;scanf("%f",&f);c=(5.0/9.0)*(f-32)

8、;printf("c=%5.2fn",c);3.10#include"stdio.h"main()char c1,c2;scanf("%c,%c",&c1,&c2);putchar(c1);putchar(c2);printf("n");printf("%c%cn",c1,c2);第四章4.3(1)0 (2)1 (3)1 (4)0 (5)14.4main()int a,b,c;scanf("%d,%d,%d",&a,&b,&c);if(

9、a<b)   if(b<c)     printf("max=%dn",c);   else     printf("max=%dn",b);else if(a<c)     printf("max=%dn",c);else     printf("max=%dn",a);main()int a,b,

10、c,temp,max;scanf("%d,%d,%d",&a,&b,&c);temp=(a>b)?a:b;max=(c>temp)?c:temp;printf("max=%d",max);4.5main()int x,y;scanf("%d",&x);if(x<1)y=x;else if(x<10)y=2*x-1;else y=3*x-11;printf("y=%d",y);4.6main()int score,temp,logic;char grade;lo

11、gic=1;while(logic)   scanf("%d",&score);    if(score>=0&&score<=100)logic=0;   if(score=100)   temp=9;else   temp=(score-score%10)/10;switch(temp)   case 9:grade='A'break;    case 8:gr

12、ade='B'break;    case 7:grade='C'break;    case 6:grade='D'break;    case 5:    case 4:    case 3:    case 2:    case 1:    case 0:grade='E' &#

13、160; printf"score=%d,grade=%c",score,grade);4.7main()long int num;int indiv,ten,hundred,thousand,ten_thousand,place;scanf("%ld",&num);if(num>9999) place=5;else if(num>999) place=4;else if(num>99) place=3;else if(num>9) place=2;else place=1;printf("place=%dn&q

14、uot;,place);ten_thousand=num/10000;thousand=(num-ten_thousand*10000)/1000;hundred=(num-ten_thousand*10000-thousand*1000)/100;ten=(num-ten_thousand*10000-thousand*1000-hundred*100)/10;indiv=num-ten_thousand*10000-thousand*1000-hundred*100-ten*10;switch(place)   case 5:printf("%d,%d,%d,

15、%d,%dn",ten_thousand,thousand,hundred,ten,indiv);           printf("%d,%d,%d,%d,%dn",indiv,ten,hundred,thousand,ten_thousand);           break;    case 4:printf("%d,

16、%d,%d,%dn",thousand,hundred,ten,indiv);           printf("%d,%d,%d,%dn",indiv,ten,hundred,thousand);           break;    case 3:printf("%d,%d,%dn",hundred,ten,i

17、ndiv);           printf("%d,%d,%dn",indiv,ten,hundred);           break;    case 2:printf("%d,%dn",ten,indiv);         &

18、#160; printf("%d,%dn",indiv,ten);           break;     case 1:printf("%dn",indiv);           printf("%dn",indiv);    4.8main()long i;float b

19、onus,bon1,bon2,bon4,bon6,bon10;bon1=100000*0.1;bon2=bon1+100000*0.075;bon4=bon2+200000*0.05;bon6=bon4+200000*0.03;bon10=bon6+400000*0.015;scanf("%ld",&i);if(i<=1e5)bonus=i*0.1;else if(i<=2e5)bonus=bon1+(i-100000)*0.075;else if(i<=4e5)bonus=bon2+(i-200000)*0.05;else if(i<=6e

20、5)bonus=bon4+(i-400000)*0.03;else if(i<=1e6)bonus=bon6+(i-600000)*0.015;else bonus=bon10+(i-1000000)*0.01;printf("bonus=%10.2f",bonus);main()long i;float bonus,bon1,bon2,bon4,bon6,bon10;int branch;bon1=100000*0.1;bon2=bon1+100000*0.075;bon4=bon2+200000*0.05;bon6=bon4+200000*0.03;bon10=b

21、on6+400000*0.015;scanf("%ld",&i);branch=i/100000;if(branch>10)branch=10;switch(branch)case 0:bonus=i*0.1;break;case 1:bonus=bon1+(i-100000)*0.075;break;case 2:case 3:bonus=bon2+(i-200000)*0.05;break;case 4:case 5:bonus=bon4+(i-400000)*0.03;break;case 6:case 7case 8:case 9:bonus=bon6

22、+(i-600000)*0.015;break;case 10:bonus=bon10+(i-1000000)*0.01;printf("bonus=%10.2f",bonus);4.9main()int t,a,b,c,d;scanf("%d,%d,%d,%d",&a,&b,&c,&d);if(a>b)t=a;a=b;b=t;if(a>c)t=a;a=c;c=t;if(a>d)t=a;a=d;d=t;if(b>c)t=b;b=c;c=t;if(b>d)t=b;b=d;d=t;if(c>

23、d)t=c;c=d;d=t;printf("%d %d %d %dn",a,b,c,d);4.10main()int h=10;float x,y,x0=2,y0=2,d1,d2,d3,d4;scanf("%f,%f",&x,&y);d1=(x-x0)*(x-x0)+(y-y0)*(y-y0);d2=(x-x0)*(x-x0)+(y+y0)*(y+y0);d3=(x+x0)*(x+x0)+(y-y0)*(y-y0);d4=(x+x0)*(x+x0)+(y+y0)*(y+y0);if(d1>1&&d2>1&

24、;&d3>1&&d4>1)h=0;printf("h=%d",h);第五章 循環(huán)控制5.1main()int a,b,num1,num2,temp;scanf("%d,%d",&num1,&num2);if(num1<num2)temp=num1;num1=num2;num2=temp;a=num1;b=num2;while(b!=0)   temp=a%b;    a=b;    b=temp;printf(&quo

25、t;%dn",a);printf("%dn",num1*num2/a);5.2#include"stdio.h"main()char c;int letters=0,space=0,digit=0,other=0;while(c=getchar()!='n')   if(c>='a'&&c<='z'|c>='A'&&c<='Z') letters+;    el

26、se if(c=' ')space+;    else if(c>='0'&&c<='9')digit+;    else other+;   printf("letters=%dnspace=%dndigit=%dnother=%dn",letters,space,digit,other);5.3main()int a,n,count=1,sn=0,tn=0;scanf("%d,%d",&a

27、,&n);while(count<=n)   tn+=a;    sn+=tn;    a*=10;    +count;   printf("a+aa+aaa+.=%dn",sn);5.4main()float n,s=0,t=1;for(n=1;n<=20;n+)   t*=n;    s+=t;   printf("s=%en",s

28、);5.5main()int N1=100,N2=50,N3=10;float k;float s1=0,s2=0,s3=0;for(k=1;k<=N1;k+)s1+=k;for(k=1;k<=N2;k+)s2+=k*k;for(k=1;k<=N3;k+)s3+=1/k;printf("s=%8.2fn",s1+s2+s3);5.6main()int i,j,k,n;for(n=100;n<1000;n+)   i=n/100;    j=n/10-i*10;    k=

29、n%10;    if(i*100+j*10+k=i*i*i+j*j*j+k*k*k)         printf("n=%dn",n);    5.7#define M 1000main()int k0,k1,k2,k3,k4,k5,k6,k7,k8,k9;int i,j,n,s;for(j=2;j<=M;j+)   n=0;     s=j;   

30、; for(i=1;i<j;i+)      if(j%i)=0)         n+;          s=s-i;          switch(n)          &#

31、160; case 1:k0=i;break;             case 2:k1=i;break;             case 3:k2=i;break;             case 4:k3=i;break;

32、0;            case 5:k4=i;break;             case 6:k5=i;break;             case 7:k6=i;break;     &

33、#160;       case 8:k7=i;break;             case 9:k8=i;break;             case 10:k9=i;break;         

34、60;                            if(s=0)        printf("j=%dn",j);         if(n>1)printf("

35、;%d,%d",k0,k1);         if(n>2)printf(",%d",k2);         if(n>3)printf(",%d",k3);         if(n>4)printf(",%d",k4);   

36、0;     if(n>5)printf(",%d",k5);         if(n>6)printf(",%d",k6);         if(n>7)printf(",%d",k7);         if(n>8)print

37、f(",%d",k8);         if(n>9)printf(",%dn",k9);                main()static int k10;int i,j,n,s;for(j=2;j<=1000;j+)   n=-1;    s=j; 

38、60;  for(i=1;i<j;i+)      if(j%i)=0)         n+;          s=s-i;          kn=i;          

39、60;         if(s=0)      printf("j=%dn",j);       for(i=0;i<n;i+)         printf("%d,",ki);       printf("%dn&qu

40、ot;,kn);          5.8main()int n,t,number=20;float a=2;b=1;s=0;for(n=1;n<=number;n+)   s=s+a/b;    t=a,a=a+b,b=t;    printf("s=%9.6fn",s);5.9main()float sn=100.0,hn=sn/2;int n;for(n=2;n<=10;n+)  

41、; sn=sn+2*hn;    hn=hn/2;   printf("sn=%fn",sn);printf("hn=%fn",hn);5.10main()int day,x1,x2;day=9;x2=1;while(day>0)   x1=(x2+1)*2;    x2=x1;    day-;    printf("x1=%dn",x1);5.11#include&q

42、uot;math.h"main()float a,xn0,xn1;scanf("%f",&a);xn0=a/2;xn1=(xn0+a/xn0)/2;do    xn0=xn1;    xn1=(xn0+a/xn0)/2;   while(fabs(xn0-xn1)>=1e-5);printf("a=%5.2fn,xn1=%8.2fn",a,xn1);5.12#include"math.h"main()float x,x0,f,f1;x=1.5

43、;do   x0=x;    f=(2*x0-4)*x0+3)*x0-6;    f1=(6*x0-8)*x0+3;    x=x0-f/f1;   while(fabs(x-x0)>=1e-5);printf("x=%6.2fn",x);5.13#include"math.h"main()float x0,x1,x2,fx0,fx1,fx2;do   scanf("%f,%f",

44、&x1,&x2);    fx1=x1*(2*x1-4)*x1+3)-6;    fx2=x2*(2*x2-4)*x2+3)-6;   while(fx1*fx2>0);do   x0=(x1+x2)/2;    fx0=x0*(2*x0-4)*x0+3)-6;    if(fx0*fx1)<0)      x2=x0;   &#

45、160;   fx2=fx0;          else      x1=x0;       fx1=fx0;          while(fabs(fx0)>=1e-5);printf("x0=%6.2fn",x0);5.14main()int i,j,k;for(i=0;i&

46、lt;=3;i+)   for(j=0;j<=2-i;j+)      printf(" ");    for(k=0;k<=2*i;k+)      printf("*");    printf("n");    for(i=0;i<=2;i+)   for(j=0;j<=i;j+)

47、      printf(" ");    for(k=0;k<=4-2*i;k+)      printf("*");    printf("n");    5.15main()char i,j,k;for(i='x'i<='z'i+)   for(j='x'j<

48、;='z'j+)     if(i!=j)       for(k='x'k<='z'k+)         if(i!=k&&j!=k)           if(i!='x'&&k!='x'&

49、;&k!='z')              printf("na-%ctb-%ctc-%cn",i,j,k);                           第六章 數(shù)組6.1#

50、include <math.h>#define N 101main() int i,j,line,aN;for (i=2;i<N;i+) ai=i;for (i=2;i<sqrt(N);i+)    for (j=i+1;j<N;j+)      if(ai!=0 && aj!=0)         if (aj%ai=0)     

51、0;      aj=0;      printf("n");for (i=2,line=0;i<N;i+) if(ai!=0)       printf("%5d",ai);          line+;      if(line=10)  

52、;     printf("n");          line=0;    6.2#define N 10main()int i,j,min,temp,aN;for(i=0;i<N;i+)   scanf("%d",&ai);for(i=0;i<N-1;i+)   min=i;    for(j=i+1;j<N

53、;j+)      if(amin>aj)min=j;    temp=ai;    ai=amin;    amin=temp;    for(i=0;i<N;i+)   printf("%5d",ai);6.3main()float a33,sum;int i,j;for(i=0;i<3;i+)   for(j=0;j<3;j+) 

54、;    scanf("%f",&sum);      aij=sum;     for(i=0;i<3;i+)   sum=sum+aii;printf("sum=%f",sum);6.4main()int a11=1,4,6,9,13,16,19,28,40,100;int temp1,temp2,number, end,i,j;scanf("%d",&number);e

55、nd=a9;if(number>end) a10=number;else    for(i=0;i<10;i+)      if(ai>number)        temp1=ai;         ai=number;         for(j=i+1;j<11;j+)

56、           temp2=aj;            aj=temp1;            temp1=temp2;             &#

57、160;      break;                     for(i=0;i<11;i+)   printf("%6d",ai);6.5#define N 5main()int aN=8,6,5,4,1,i,temp;for(i=0;i<N/2;i+)   temp=ai;

58、0;   ai=aN-i-1;    aN-i-1=temp;    for(i=0;i<N;i+)   printf("%4d",ai);6.6#define N 11main()int i,j,aNN;for(i=1;i<N;i+)   aii=1;    ai1=1;   for(i=3;i<N;i+)   for(j=2;j<i;j+) 

59、0;   aij=ai-1j-1+ai-1j;for(i=1;i<N;i+)   for(j=1;j<=i;j+)      printf("%6d",aij);    printf("n");   6.7main()int a1616,i,j,k,p,m,n;p=1;while(p=1)   scanf("%d",&n);   

60、; if(n!=0)&&(n<=15)&&(n%2!=0)p=0;   for(i=1;i<=n;i+)   for(j=1;j<=n;j+)     aij=0;j=n/2+1;a1j=1;for(k=2;k<=n*n;k+)   i=i-1;    j=j+1;    if(i<1)&&(j>n)    

61、60; i=i+2;       j=j-1;          else      if(i<1)i=n;       if(j>n)j=1;          if(aij=0)aij=k;    else 

62、60;    i=i+2;       j=j-1;       aij=k;          for(i=1;i<=n;i+)   for(j=1;j<=n;j+)      printf("%3d",aij);    printf(

63、"n");   6.8#define N 10#define M 10main()int i,j,k,m,n,flag1,flag2,aNM,max,maxi,maxj;scanf("%d,%d",&n,&m);for(i=0;i<n;i+)   for(j=0;j<m;j+)     scanf("%d",&aij);flag2=0;for(i=0;i<n;i+)   max=ai0;

64、0;   for(j=0;j<m;j+)      if(max<aij)        max=aij;         maxj=j;            for(k=0,flag1=1;k<n&&flag1;k+)  

65、    if(max>akmaxj)flag1=0;    if(flag1)      printf("na%d%d=%dn",i,maxj,max);        flag2=1;          if(!flag2) printf("NOT");6.9#include<stdi

66、o.h>#define N 15main()int i,j,number,top,bott,min,loca,aN,flag;char c;for(i=0;i<=N;i+)   scanf("%d",&ai);flag=1;while(flag)   scanf("%d",&number);    loca=0;    top=0;    bott=N-1;    if

67、(number<a0)|(number>aN-1)      loca=-1;    while(loca=0)&&(top<=bott)      min=(bott+top)/2;       if(number=amin)         loca=min;  

68、0;       printf("number=%d,loca=%dn",number,loca+1);                else if(number<amin)         bott=min-1;       el

69、se         top=min+1;            if(loca=0|loca=-1)        printf("%d not in tablen",number);     printf("continue Y/N or y/nn");  

70、;   c=getchar();     if(c='N'|c='n')flag=0;    6.10main()int i,j,uppn,lown,dign,span,othn;char text380;uppn=lown=dign=span=othn=0;for(i=0;i<3;i+)   gets(texti);    for(j=0;j<80&&textij!='0'j+)      if(textij>='A'&&textij<='Z')         uppn+;       else if(textij>='a'&&textij<