谭浩强C习题答案Word下载.docx

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谭浩强C习题答案Word下载.docx

2.12

(1)24

(2)10(3)60(4)0(5)0(6)0

第三章

3.4

{inta,b,c;

longintu,n;

floatx,y,z;

charc1,c2;

a=3;

b=4;

c=5;

x=1.2;

y=2.4;

z=-3.6;

u=51274;

n=128765;

c1='

c2='

b'

a=%2db=%2dc=%2d\n"

a,b,c);

x=%8.6f,y=%8.6f,z=%9.6f\n"

x,y,z);

x+y=%5.2fy+z=%5.2fz+x=%5.2f\n"

x+y,y+z,z+x);

u=%6ldn=%9ld\n"

u,n);

c1='

%c'

or%d(ASCII)\n"

c1,c1);

c2,c2);

3.5

57

57

67.856400,-789.123962

67.86-789.12,67.856400,-789.123962,67.856400,-789.123962

6.785640e+001,-7.89e+002

A,65,101,41

1234567,4553207,d687

65535,177777,ffff,-1

COMPUTER,COM

3.6

a=3b=7/

x=8.5y=71.82/

c1=Ac2=a/

3.7

1020Aa1.5-3.75+1.4,67.8/

(空3)10(空3)20Aa1.5(空1)-3.75(空1)(随意输入一个数),67.8回车

3.8

{floatpi,h,r,l,s,sq,sv,sz;

pi=3.1415926;

inputr,h\n"

%f,%f"

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;

l=%6.2f\n"

l);

s=%6.2f\n"

s);

sq=%6.2f\n"

sq);

vq=%6.2f\n"

sv);

vz=%6.2f\n"

sz);

3.9

{floatc,f;

%f"

f);

c=(5.0/9.0)*(f-32);

c=%5.2f\n"

c);

3.10

#include"

stdio.h"

{charc1,c2;

%c,%c"

c1,&

c2);

putchar(c1);

putchar(c2);

%c%c\n"

第四章

4.3

(1)0

(2)1(3)1(4)0(5)1

4.4

if(a<

b)

if(b<

c)

max=%d\n"

else

b);

elseif(a<

a);

{inta,b,c,temp,max;

temp=(a>

b)?

a:

b;

max=(c>

temp)?

c:

temp;

4.5

{intx,y;

%d"

x);

if(x<

1)y=x;

elseif(x<

10)y=2*x-1;

elsey=3*x-11;

y=%d"

y);

4.6

{intscore,temp,logic;

chargrade;

logic=1;

while(logic)

{scanf("

score);

if(score>

=0&

&

score<

=100)logic=0;

}

if(score==100)

temp=9;

temp=(score-score%10)/10;

switch(temp)

{case9:

grade='

A'

break;

case8:

B'

case7:

case6:

D'

case5:

case4:

case3:

case2:

case1:

case0:

E'

printf"

score=%d,grade=%c"

score,grade);

4.7

{longintnum;

intindiv,ten,hundred,thousand,ten_thousand,place;

%ld"

num);

if(num>

9999)place=5;

elseif(num>

999)place=4;

99)place=3;

9)place=2;

elseplace=1;

place=%d\n"

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)

{case5:

printf("

%d,%d,%d,%d,%d\n"

ten_thousand,thousand,hundred,ten,indiv);

indiv,ten,hundred,thousand,ten_thousand);

break;

%d,%d,%d,%d\n"

thousand,hundred,ten,indiv);

indiv,ten,hundred,thousand);

%d,%d,%d\n"

hundred,ten,indiv);

indiv,ten,hundred);

%d,%d\n"

ten,indiv);

indiv,ten);

%d\n"

indiv);

4.8

{longi;

floatbonus,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;

i);

if(i<

=1e5)bonus=i*0.1;

elseif(i<

=2e5)bonus=bon1+(i-100000)*0.075;

=4e5)bonus=bon2+(i-200000)*0.05;

=6e5)bonus=bon4+(i-400000)*0.03;

=1e6)bonus=bon6+(i-600000)*0.015;

elsebonus=bon10+(i-1000000)*0.01;

bonus=%10.2f"

bonus);

intbranch;

branch=i/100000;

if(branch>

10)branch=10;

switch(branch)

{case0:

bonus=i*0.1;

bonus=bon1+(i-100000)*0.075;

bonus=bon2+(i-200000)*0.05;

bonus=bon4+(i-400000)*0.03;

case7

case9:

bonus=bon6+(i-600000)*0.015;

case10:

bonus=bon10+(i-1000000)*0.01;

4.9

{intt,a,b,c,d;

%d,%d,%d,%d"

c,&

d);

if(a>

b){t=a;

a=b;

b=t;

c){t=a;

a=c;

c=t;

d){t=a;

a=d;

d=t;

if(b>

c){t=b;

b=c;

d){t=b;

b=d;

if(c>

d){t=c;

c=d;

%d%d%d%d\n"

a,b,c,d);

4.10

{inth=10;

floatx,y,x0=2,y0=2,d1,d2,d3,d4;

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>

d3>

d4>

1)h=0;

h=%d"

h);

第五章循环控制

5.1

{inta,b,num1,num2,temp;

%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;

num1*num2/a);

5.2

{charc;

intletters=0,space=0,digit=0,other=0;

while((c=getchar())!

='

\n'

{if(c>

c<

z'

||c>

Z'

)letters++;

elseif(c=='

'

)space++;

elseif(c>

0'

9'

)digit++;

elseother++;

letters=%d\nspace=%d\ndigit=%d\nother=%d\n"

letters,space,digit,other);

5.3

{inta,n,count=1,sn=0,tn=0;

n);

while(count<

=n)

{tn+=a;

sn+=tn;

a*=10;

++count;

a+aa+aaa+...=%d\n"

sn);

5.4

{floatn,s=0,t=1;

for(n=1;

n<

=20;

n++)

{t*=n;

s+=t;

s=%e\n"

5.5

{intN1=100,N2=50,N3=10;

floatk;

floats1=0,s2=0,s3=0;

for(k=1;

k<

=N1;

k++)s1+=k;

=N2;

k++)s2+=k*k;

=N3;

k++)s3+=1/k;

s=%8.2f\n"

s1+s2+s3);

5.6

{inti,j,k,n;

for(n=100;

1000;

{i=n/100;

j=n/10-i*10;

k=n%10;

if(i*100+j*10+k==i*i*i+j*j*j+k*k*k)

n=%d\n"

n);

5.7

#defineM1000

{intk0,k1,k2,k3,k4,k5,k6,k7,k8,k9;

inti,j,n,s;

for(j=2;

j<

=M;

j++)

{n=0;

s=j;

for(i=1;

i<

j;

i++)

{if((j%i)==0)

{n++;

s=s-i;

switch(n)

{case1:

k0=i;

k1=i;

k2=i;

k3=i;

k4=i;

k5=i;

k6=i;

k7=i;

k8=i;

k9=i;

if(s==0)

{printf("

j=%d\n"

j);

if(n>

1)printf("

k0,k1);

2)printf("

%d"

k2);

3)printf("

k3);

4)printf("

k4);

5)printf("

k5);

6)printf("

k6);

7)printf("

k7);

8)printf("

k8);

9)printf("

%d\n"

k9);

{staticintk[10];

=1000;

{n=-1;

k[n]=i;

for(i=0;

n;

%d,"

k[i]);

k[n]);

5.8

{intn,t,number=20;

floata=2;

b=1;

s=0;

=number;

{s=s+a/b;

t=a,a=a+b,b=t;

s=%9.6f\n"

5.9

{floatsn=100.0,hn=sn/2;

intn;

for(n=2;

=10;

{sn=sn+2*hn;

hn=hn/2;

sn=%f\n"

hn=%f\n"

hn);

5.10

{intday,x1,x2;

day=9;

x2=1;

while(day>

0)

{x1=(x2+1)*2;

x2=x1;

day--;

x1=%d\n"

x1);

5.11

math.h"

{floata,xn0,xn1;

a);

xn0=a/2;

xn1=(xn0+a/xn0)/2;

do

{xn0=xn1;

while(fabs(xn0-xn1)>

=1e-5);

a=%5.2f\n,xn1=%8.2f\n"

a,xn1);

5.12

{floatx,x0,f,f1;

x=1.5;

{x0=x;

f=((2*x0-4)*x0+3)*x0-6;

f1=(6*x0-8)*x0+3;

x=x0-f/f1;

while(fabs(x-x0)>

x=%6.2f\n"

x);

5.13

{floatx0,x1,x2,fx0,fx1,fx2;

x1,&

x2);

fx1=x1*((2*x1-4)*x1+3)-6;

fx2=x2*((2*x2-4)*x2+3)-6;

while(fx1*fx2>

0);

{x0=(x1+x2)/2;

fx0=x0*((2*x0-4)*x0+3)-6;

if((fx0*fx1)<

{x2=x0;

fx2=fx0;

{x1=x0;

fx1=fx0;

while(fabs(fx0)>

x0=%6.2f\n"

x0);

5.14

{inti,j,k;

=3;

{for(j=0;

=2-i;

"

for(k=0;

=2*i;

k++)

*"

=2;

=i;

=4-2*i;

5.15

{chari,j,k;

for(i='

x'

for(j='

{if(i!

=j)

for(k='

=k&

j!

=k)

k!

\na--%c\tb--%c\tc--%c\n"

i,j,k);

第六章数组

6.1

#include<

math.h>

#defineN101

main()

{inti,j,line,a[N];

for(i=2;

N;

i++)a[i]=i;

sqrt(N);

for(j=i+1;

{if(a[i]!

=0&

a[j]!

if(a[j]%a[i]==0)

a[j]=0;

for(i=2,line=0;

{if(a[i]!

{printf("

%5d"

a[i]);

line++;

if(line==10)

line=0;

6.2

#defineN10

{inti,j,min,temp,a[N];

a[i]);

N-1;

{min=i;

for(j=i+1;

if(a[min]>

a[j])min=j;

t

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