Dim a(5) As Integer, st As String = ""
For i = 10000 To 99999
a(1) = i Mod 10
a(2) = (i Mod 100) \ 10
a(3) = (i Mod 1000) \ 100
a(4) = (i Mod 10000) \ 1000
a(5) = i \ 10000
If a(1) ^ 5 + a(2) ^ 5 + a(3) ^ 5 + a(4) ^ 5 + a(5) ^ 5 = i Then
st = st & i & " "
End If
Next
TextBox6Text = st
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谭浩强C语言程序设计习题参考解答
C程序设计题解与上机指导 答案
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c语言程序设计第三版指导答案
附录F 课后题参考答案
习 题 1
11 填空题
1.函数
2.主函数main();主函数main() 3.主函数main() 4.函数首部;函数体 5.{;}
6.顺序结构;选择结构;循环结构 7.c;obj;exe
12 思考题
1.答:结构化程序设计是指,为使程序具有一个合理的结构以保证程序正确性而规定的一套如何进行程序设计的原则。顺序结构,选择结构,循环结构
2.答:算法是对具体问题求解步骤的一种描述。计算机算法的表达工具通常采用以下几种方法:①用自然语言表示算法;②用流程图表示算法;③用伪代码表示算法;④用程序设计语言表示算法。
3.略 4.略 5.略 13 编程题 1.答:
#include "stdioh" main()
{ float a=10, b=20, h=5, s; s=(a+b)h/2;
printf("s=%f " , s ); }
2.答:
#include "stdioh"
main()
{ printf(""); printf(" hello world "); printf(""); }
习 题 2
21 单选题
DBDCA DCABB CA
22 填空题
1.2000000
2.1;0500000
3.9;2 4.6 5.100;d 6.(1)20
(2)0
(3)60 7.(1)10;6;4
(2)6;9;15
(3)3;60;83
8.55或 '7'
9.x=4;y=6;z=3;m=463
23 改错题(略)
习 题 3
31 单选题
BDABC ADCAC BBA
32 填空题
1.3 2.261 3.10
4.2, 1;互换a,b的值 5.66 6.003 7.7
8.50,4,c=3<Enter>
9.i=10,j=20<Enter>
10. (1)65 (2)65,A (3)314,12346
(4)3141600e+000,1234560e+002 (5)8765432100 (6)8765432e+003
11.a=2b=5x=88y=7634c1=65c2=97 12.%d/%d;%d/%d=%2f\n
33 改错题(略) 34 编程题
1.答:
#include "stdioh" main() {
int x,y;
scanf("%d%d",&x,&y); printf("\t\tx\ty\n");
printf("十进制数\t%d\t%d\n",x,y); printf("八进制数\t%o\t%o\n",x,y); printf("十六进制数\t%X\t%x\n",x,y); }
2.答:
#include "stdioh" main() {
char ch;
printf("请输入一个大写英文字母"); scanf("%c",&ch);
printf("大写英文字母是%c\n",ch); printf("它的前导字符是%c\n",ch-1); printf("它的后续字符是%c\n",ch+1); }
3.答:
#include "stdioh" main() {
int x,a,b,c,y;
printf("请输入一个三位整数\n"); scanf("%d",&x); a=x/100;
b=(x-a100)/10; c=x%10;
y=c100+b10+a;
printf("反向输出该整数:%d\n",y); } }
4.答:
#include "stdioh" main()
{ int hour;
double salary, salaryday;
scanf("%d,%lf", &hour, &salaryday );
salary=hoursalaryday- hoursalaryday01;
printf("%82lf\n", salary); }
5.答:
#include "stdioh" main() {
int a,b,c,t;
printf("请输入三个整数\n"); scanf("%d%d%d",&a,&b,&c);
printf("交换前a=%d,b=%d,c=%d\n",a,b,c); t=a;a=c;c=b;b=t;
printf("交换后a=%d,b=%d,c=%d\n",a,b,c); }
习 题 4
41 单选题
BADDD ACBBB BA
42 填空题
1.1
2.(1)a>0 || b>0
(2)x>0 && x<=10 (3)a==15 && b==15 && c==15
(4)p<a || p<b || p<c
3.(1)0 (2)1 (3)1 (4)0 (5)1
4.c=1 5.-4 6.1 7.5, 0, 3 8.5 9.123
10.( cvb= ='y'||cvb= ='Y')&&(work>=3||college=='y'|| college=='Y')&&age<=35
43 改错题(略) 44 编程题
1.答
#include "stdioh"
#include "mathh" main() {
double a,b,c,p,area;
scanf("%lf%lf%lf",&a,&b,&c);
printf("三角形的三边为:%llf,%1lf,%1lf\n",a,b,c); if (a+b>c&&a+c>b&&b+c>a) {p=(a+b+c)/2;
area=sqrt(p(p-a)(p-b)(p-c));
printf("三角形的面积为%2lf\n",area); } else
printf("不能构成三角形\n"); }
2.答:
#include "stdioh" main()
{ int x,y;
scanf("%d,%d",&x,&y); if(xx+yy>1000)
printf("%d\n",(xx+yy)/100); else
printf("%d\n",x+y); }
3.答:
#include "stdioh" #include "mathh" main()
{ double x,y;
scanf("%lf",&x); if(x<-2) y=xx-sin(x); else if (x<=2) y=pow(2,x)+x; else y=sqrt(xx+x+1);
printf("x=%2lf y=%2lf\n",x,y); }
4.答:
#include "stdioh" main( )
{ long ge,shi,qian,wan,x; scanf("%ld",&x); wan=x/10000;
qian=x%10000/1000; shi=x%100/10;
ge=x%10;
if (ge==wan&&shi==qian) /个位等于万位并且十位等于千位/ printf("this number is a huiwen\n"); else
printf("this number is not a huiwen\n");
}
5.答:
#include "stdioh" main()
{ float p,w,s,d,f;
scanf("%f,%,%f",p,s,w); if (s>3000) d=015 else if( s>=2000) d=01; else if(s>=1000) d=008; else if(s>=500) d=005; else if(s>=250) d=002; else d=0 f=pws(1-d); printf("%f",f); }
6.答:
#include "stdioh" main()
{ int year,money; char x;
printf("是否是本公司产品(y/n):"); scanf("%c",&x);
if(x=='y'||x=='Y')
{printf("产品使用的年限:"); scanf("%d",&year);
if(year<=1) money=0;
else if(year<8) money=50; else money=100;
printf("产品保修额是:%d\n",money);
}
else
{ money=200;
printf("不是本公司产品,产品保修额是:%d\n",money); } }
7.答:
#include "stdioh" main()
{ int money,num1,num2;
printf("请输入取款额(≤2000):"); scanf("%d",&money);
if(money>2000) printf("请输入取款额数≤2000!\n"); else if(money%50==0) { num1=money/100; num2=(money-num1100)/50; printf("需支付100元:%d张\n",num1); printf("需支付50元:%d张\n",num2); } else printf("输入钱数必须是50的倍数!\n"); }
习 题 5
51 单选题
CDABA ABDDB DBCB
52 填空题
1.2 0 2.333
3.(1)i<10 或 i<=9 (2)j%3!=0
4.(1)flag(float)k/(k+1) 或10flagk/(k+1) (2)flag=-flag 5.(1)max=x
(2)x!=-1 (3)scanf("%d", &x)
6.(1)x<=9或x<10
(2)y=9-x
53 改错题(略) 54 编程题
1.答:
(1)for循环,其他略
#include "stdioh"
main()
{ int i,s=0;
for(i=1;i<=100;i++) s+=ii;
printf("%d\n",s); }
(2)for循环,其他略
#include "stdioh" main()
{ int i=1,p=1; double s=1; do {
s+=10/p; p=++i;
}while(10/p>1e-6); printf("%lf",s); }
2.答:
#include "stdioh" main()
{ int m,n,t,a,b;
scanf("%d,%d" ,&m,&n) if (m<n)
{ t=m m=n n=t } a=m; b=n; t=m%n while(t)
{ m=n n=t t=m%n;} printf("%d",n); }
3.答:
#include "stdioh" main()
{ int x,y,s=1;
scanf("%d,%d",&x,&y) for( y>0 y--)s=x
printf("%d,%d,%d\n ",s%10,s/10%10,s/100%10); }
4.答:
#include "stdioh" main()
{ int x,y,z;
for( x=1 x<20 x++) for( y=1 y<33 y++) { z=100-x-y
if ((z%3)==0 &&(5x+3y+z/3)==100) printf("x=%d,y=%d,z=%d\n",x,y,z) } }
5.答: (a)
#include "stdioh" main()
{ int j,k
for( j=1 j<=4 j++)
{ for(k=1;k<=4-j;k++)printf(" "); printf("") printf("\n") } }
(b)
#include "stdioh" main()
{ int j,k
for( j=1 j<=4 j++)
{for(k=1;k<=4-j;k++)printf(" "); for(k=1 k<=2j-1 k++) printf("") printf("\n") } }
6.答:
程序分析:利用for循环控制在100~999之间,对每个数分解出个位、十位、百位。
#include <stdioh> main() { int i,j,k,n; printf("water flower'number is:"); for(n=100;n<1000;n++) { i=n/100;/分解出百位/ j=n/10%10;/分解出十位/ k=n%10;/分解出个位/ if(n==iii+jjj+kkk) { printf("%-5d",n); } } printf("\n"); }
7.答:
#include <stdioh> main() { int x; for(x=1000;x>=3;x--) if(x%3==1&&x%5==2&&x%7==3) {
printf("该校的学生人数是:%d人\n",x); break; } }
8.答:
#include <stdioh> main() { int x=12,i=1; while(1)
{ if((x+20+i)==2(x+i)) break; i++; } printf("小明母亲在%d年后比小明的年龄大一倍\n",i); printf("那时小明年龄是:%d岁,小明母亲年龄是:%d岁\n",x+i,x+20+i); }
习 题 6
61 单选题
DBCCB BDC
C语言程序设计教程(第3版)
278
62 填空题
1.c 2.60 3.1000 10 4.16
63 编程题
1.答:
#include "stdioh" #include "mathh"
#define F(a) aa+ sqrt(3aa+2a+1) main()
{ float x, f;
scanf("%f", &x );
f=45/F(exp(x))+F(cos(x))+F(sqrt(x))/F(xx) printf("%f\n", f); }
习 题 7
71 单选题
BCADA CCCDA BCBDB
72 填空题
1.(1)2 3 4 5 (2)10010 (3)QuickC
(4)10000 01000 00100 00010 00001 (5)Language
(6)Language Programming 2.(1)j+=2 (2)a[i]>a[j] 3.(1)i=1 (2)x[i-1]
73 改错题(略) 74 编程题
1.答:
#define N 10
#include "stdioh" main()
{ int a[N]={1,2,3,4,5,6,7,8,9,10,osum=0, qsum=0,j; for(j=0;j<10;j++)
if( j%2) qsum+=a[j];
else osum+=a[j];
printf("osum=%d,qsum=%d\n", osum,qsum); }
2.答:
#define N 10
#include "stdioh" main()
{ int a[N]={10,20,30,40,50,60,70,80,90}, j, k, x; scanf("%d",&x); for(j=0;j<N;j++)
if (x<a[j]) break; if(j==N) a[N-1]=x; else
{for(k=N-1; k>j; k--) a[k]=a[k-1]; a[j]=x;}
for(j=0;j<N;j++)
printf("%d ",a[j]); }
3.答:
#define M 3
#include "stdioh" main()
{ int a[M][M]={{1,2,3},{2,4,5},{3,5,6}},j,k,flag=1;; for( j=0;j<M;j++)
for(k=0;k<M;k++) if (a[j][k]!=a[k][j]) { flag=0; break;} if (flag) printf("ok"); else printf("NO"); }
4.答:
#include "stdioh" #include "stringh" main()
{ char c1[10],c2[10],j; gets(c1); gets(c2);
for(j=0; (c1[j]==c2[j]) && c1[j] && c2[j]; j++); if (c1[j]>c2[j]) printf("%d\n",1); if (c1[j]<c2[j]) printf("%d\n",-1); if (c1[j]==c2[j]) printf("%d\n",0); }
5.答:
#include "stdioh" #include "stringh" #define M 3 #define N 80 main()
{ char a[M][N],j,k,n[5]={0}; for(j=0;j<M;j++) gets(a[j]);
for(j=0;j<M;j++)
for(k=0;a[j][k];k++)
if( a[j][k]>='A' && a[j][k]<='Z') n[0]++;
else if (a[j][k]>='a' && a[j][k]<='z') n[1]++; else if (a[j][k]>='0' && a[j][k]<='9') n[2]++; else if (a[j][k]==' ' ) n[3]++; else n[4]++;
for(j=0;j<5;j++) printf("%4d", n[j]); }
习 题 8
81 单选题
DBDAC BACCC
82 填空题
1.(1)2, 1 (2)10#30# (3)FOUR, P (4)60
2.(1)49
(2)2
(3)2
(4)
(5)
83 改错题(略) 84 编程题
1.答:
#include "stdioh"
main()
{ int n1,n2,n3,t; int p1,p2,p3;
printf("please input 3 number:n1,n2,n3:"); scanf("%d,%d,%d",&n1,&n2,&n3); p1=&n1;
p2=&n2; p3=&n3;
if(p1> p2) { t=p1;p1=p2;p2=t;}
if(p1>p3) { t=p1;p1=p3;p3=t;} if(p2>p3) { t=p2;p2=p3;p3=t;}
printf("the sorted numbers are:%d,%d,%d\n",n1,n2,n3); }
2.答:
#include "stdioh" #define N 3 main()
{ int a[N],p=a; for(;p-a<N; p++) scanf("%d",p); p=a+N-1;
for(;p-a>=0; p--) printf("%d ",p); }
3.答:
#include "stdioh" main()
{ int a[10];
int j,minl=0,maxl=0; for(j=0;j<10;j++)
scanf("%d", a+j); for(j=0;j<10;j++)
{ if(a[maxl]<(a+j)) maxl=j; if(a[minl]>(a+j)) minl=j; }
j=a[0]; a[0]=a[minl];a[minl]=j; j=a[9];a[9]=a[maxl];a[maxl]=j; for(j=0;j<10;j++) printf("%d ", (a+j)); }
4.答:
输入阵列如下: 1 2 3 4 5 6 7 8 9 10 11 12 输出阵列如下:
12 11 10 9 8 7 6 5 4 3 2 1
#define M 3
#define N 4
#include "stdioh" main()
{ int a[M][N]={1,2,3,4,5,6,7,8,9,10,11,12},k,j,p=&a[0][0],t; for(k=0,j=MN-1;k<j;k++,j--)
{ t=(p+k); (p+k)=(p+j); (p+j)=t;} for (k=0 k<M k++) { for(j=0 j<N j++)
printf("%4d ",a[k][j]); printf("\n");
} }
5.答:
#include "stdioh" main() {
int len;
char str[20],p=str;
printf("please input a string:\n"); scanf("%s",str); len=0;
while(p!='\0') {
len++; p++; }
printf("the string has %d characters\n",len); }
6.答:
#include "stringh" #include "stdioh" main() {
char str1[5],ch[5][20],k,t,j,c; void sort(char ); for(k=0;k<5;k++) {str1[k]=ch[k]; gets(str1[k]);} for(k=0;k<7;k++)
{ t=k;
for(j=k+1;j<5;j++) if(strcmp((str1+t),(str1+j))>0) t=j; c=(str1+t);
(str1+t)=(str1+k) (str1+k)=c }
for(k=0;k<5;k++) puts(str1[k]); }
习 题 9
91 单选题
CBBAD DBCCD DCABC BCCBA DCDAB
92 填空题
1.120 2.x 3.3,2,2,3 4.fac /i 5.8,17 6.9 7.10/(ii) 8.
fun-in:30,20,10 fun-end:1015,35,1050 10,20,30 9.012345 10.93636 11.(1)r+b[k] (2)x
12.7 5 3 1 9 13.15
14.(1)x (2)t 15.(1)'\0' (2)n++ 16.024
93 改错题(略) 94 编程题
1.答:
void zhuan( )
{ char ch;
while((ch=getchar())!='\n')
{ if(ch>='a' && ch<='z') ch=ch-32; putchar(ch); } }
2.答:
double expp(int n) { int k, fac=1; double sum=1;
for(k=1; k<=n; k++) { fac=k;
sum+=10/fac }
return(sum); }
3.答:
int xy3( int x, int y)
{ int k, num=1;
for(k=1;k<=y k++) num=x
num=num%1000 return num }
4.答:
int age( int n) { int c;
if(n==1) c=10
else c=age(n-1)+2 return c }
5.答:
#include "stdioh"
main()
{ int a,b,c,d;
void fun(int a,int b,int c, int d); scanf("%d%d",&a,&b); fun(a,b,&c,&d);
printf("%d %d",c,d);
}
void fun(int a,int b,int c, int d) { if (b)
{ c=a/b; d=a%b;} }
6.答:
#include "stdioh"
main(int argc,char argv[]) { int k;
printf("argc=%d\n",argc); for (k=1;k<argc; k++) printf("%s\n",argv[k]); }
习 题 10
101 单选题
CDBBB BBBAD CCBDC
102 填空题
1.所有结构体成员所占存储空间的总和 2.与占用存储空间最大的那个成员相等
附录F 课后题参考答案
285
3.(1)struct satype (2)3 (3)saa (4)9 (5)psa=&sa 4.80 5.struct node 6.0
103 编程题
1.答:
#include "stdioh"
struct student {
long num;
char name[20]; char sex; float score; }; main()
{ struct student s[20], temp; int j,k, man=0, woman=0;
float summan=0,sumwoman=0, aveman, avewoman; for(k=0; k<20; k++)
{ scanf("%ld %s %c%f",&s[k]num,s[k]name,&s[k]sex,&s[k]score); if(s[k]sex=='m')
{ summan+=s[k]score; man++;} else
{ sumwoman+=s[k]score;woman++ } }
aveman=summan/man;
avewoman=sumwoman/woman;
printf("%d\t%f\t%d\t%f\n",man,aveman,woman,avewoman); for(k=0; k<19; k++)
for(j=0;j<20-k;j++)
if(s[j]score<s[j+1]score)
{ temp=s[j];s[j]=s[j+1];s[j+1]=temp;} printf("the sorted numbers:\n"); for(k=0;k<20;k++)
printf("%ld\t%s\t%c\t%51f\n",s[k]num,s[k]name,s[k]sex,s[k]score); }
习 题 11
111 单选题
BADD
112 填空题
1.3d3d330 2.(1)28
(2)20 (3)0 (4)--9
3.(1)251
(2)42
(3)209
(4)–295 (5)848
习 题 12
121 单选题
BCDCA ADA
122 填空题
1.rewind(文件指针) 2."d1dat","rb" 3.stdin
4.文本文件;二进制文件 5.(1)"w"
(2)str[i]--32
(3)"r"
6.fopen 7.Hello 8.(1)"r"
(2)fgetc(fp)
(3)time++
C语言程序设计实验与习题指导课后程序设计答案
P18
(1)
#include<stdioh> int main(void) { intcelsius,fahr; fahr=150; celsius=5fahr/9-532/9; printf("fahr=%d,celsius=%d\n",fahr,celsius); return 0; }
(2)
#include<stdioh> int main(void) { intcelsius,fahr; celsius=26; fahr=9celsius/5+32; printf("celsius=%d,fahr=%d\n",celsius,fahr); return 0; }
(3)
#include<stdioh> int main(void) { intaverage,math,eng,comp; math=87; eng=72; comp=93; average=(math+eng+comp)/3; printf("math=%d,eng=%d,comp=%d,average=%d\n",math,eng,comp,average); return 0; }
(4)
#include<stdioh> int main(void) { intn,a,b,c; n=152
c=n%10;
b=(n/10)%10; a=n/100;
printf("整数%d的个位数字是%d,十位数字是%d,百位数字是%d\n",n,c,b,a); return 0;
}
P27
(1)
#include<stdioh> #include<mathh> int main(void) { intcelsius,fahr; printf("Enter celsius:"); scanf("%d",&celsius); fahr=9celsius/5+32; printf("fahr%d\n",fahr); return 0; }
(2)
#include<stdioh> #include<mathh> int main(void) { intmoney,year; doublerate,interest; printf("Enter money,year,rate:"); scanf("%d%d%lf",&money,&year,&rate); interest=moneypow(1+rate,year)-money; printf("interest=%2f\n",interest); return 0; }
(3)
#include<stdioh> #include<mathh> int main(void) { doublex,y; printf("Enter x:"); scanf("%lf",&x);
if(x<0){ y=pow(x+1,2)+2x+1/x; } else{ y=sqrt(x); }
printf("y=f(%f)=%2f\n",x,y); return 0;
}
(4)
#include<stdioh> int main(void) { intx,y; printf("Enter num1:"); scanf("%d",&x); printf("Enter num2:"); scanf("%d",&y); printf("%d+%d=%d\n",x,y,x+y); printf("%d-%d=%d\n",x,y,x-y); printf("%d%d=%d\n",x,y,xy); printf("%d/%d=%d\n",x,y,x/y); printf("%d%%%d=%d\n",x,y,x%y); return 0; }
10的阶乘
#include<stdioh> int main(void) { inti,n,product; printf("Enter n:"); scanf("%d",&n); product=1; for(i=1;i<=n;i++){ product=producti; } printf("product=%d\n",product); return 0; }
Private Sub ni_Click()
End Sub
Public Function GetHLS(A() As Integer) As Double
If UBound(A) = 1 Then
GetHLS = A(0, 0) A(1, 1) - A(0, 1) A(1, 0)
End If
If UBound(A) > 1 Then
Dim RRes As Double
Dim LRes As Double
Dim CNum As Integer
Dim TNum As Double
Dim i As Integer
RRes = 0
LRes = 0
For i = 0 To UBound(A)
CNum = i
TNum = 1
If i = 0 Then
For j = 0 To UBound(A)
TNum = TNum A(j, j)
Next j
End If
If i > 0 Then
Call YD(i)
For j = 0 To UBound(A)
TNum = TNum A(j, cc(j))
Next j
End If
RRes = RRes + TNum
Next i
For i = 0 To UBound(A)
CNum = i
TNum = 1
If i = 0 Then
For j = 0 To UBound(A)
TNum = TNum A(j, UBound(A) - j)
Next j
End If
If i > 0 Then
Call YD(i)
For j = 0 To UBound(A)
TNum = TNum A(UBound(A) - j, cc(j))
Next j
End If
LRes = LRes + TNum
Next i
GetHLS = RRes - LRes
End If
End Function
Public Sub YD(N As Integer)
Dim n1 As Integer
n1 = UBound(aa)
ReDim bb(n1)
ReDim cc(n1)
For i = 0 To n1 - N
bb(i) = aa(N + i)
Next
For i = 0 To n1 - N
cc(i) = bb(i)
Next
For i = n1 - N + 1 To n1
cc(i) = aa(i - n1 + N - 1)
Next
End Sub
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