C++作业答案

CH0408.txt# include <stdio.h>void main(){double r,h,l,s,sq,vq,vz;scanf("%lf%lf",&r,&h);l=2*3.141592653*r;s=3.141592653*r*r;sq=4*3.141592653*r*r;vq=4*3.141592653*r*r*r/3;vz=3.141592653*r*r*h;printf("l=%.2lf\ns=%.2lf\nsq=%.2lf\nvq=%.2lf\nvz=%.2lf\n",l,s,sq,vq,vz); }CH0505.txt#include <stdio.h>void main(){int x,y;scanf("%d",&x);if (x>=1)if (x>=10)y=3*x-11;else y=2*x-1;else y=x;printf("y=%d",y);}CH0510.txt#include <stdio.h>void main(){double x,y;int h=10;scanf ("%lf%lf",&x,&y);if ((x-2)*(x-2)+(y-2)*(y-2)<=1) printf ("h=10\n");elseif ((x+2)*(x+2)+(y-2)*(y-2)<=1) printf ("h=10\n");elseif ((x-2)*(x-2)+(y+2)*(y+2)<=1) printf ("h=10\n");elseif ((x+2)*(x+2)+(y+2)*(y+2)<=1)printf ("h=10\n");else printf ("h=0\n");}CH0603.txt#include <stdio.h>#include<math.h>void main(){long int a,n,sum=0,b,i;scanf("%d %d",&a,&n);for(i=1;i<=n;i++){b=pow(10,i);sum+=b;}sum=a*sum/9;printf("a+aa+aaa+...=%ld\n",sum); }CH0607.txt# include <stdio.h>#include<math.h>{int n,i,j,t,k;for(n=2;n<=1000;n++){i=1;j=0;t=0;k=0;for(i=1;i<n;i++){if(n%i==0)t=t+i;}if(t==n){printf("%d",n);for(i=1;i<n;i++){if(n%i==0&&i!=1)printf("+%d",i);else if(n%i==0&&i==1)printf("=%d",i);}printf("\n");}}}CH0611.txt迭代# include <stdio.h>#include<math.h>{float a,x,x1,x2=1.0;scanf("%f",&a);x1=(x2+a/x2)/2;while(fabs(x2-x1)>=pow(10,-5)) { x2=x1;x1=(x2+a/x2)/2;}x=x1;printf("x=%.5f",x);}CH0613.txt二分法#include <stdio.h>#include <math.h>void main(){double x,x1,x2,x3,fx1,fx2,fx3; scanf("%lf %lf",&x1,&x2);fx1=(2*x1*x1*x1-4*x1*x1+3*x1-6); fx2=(2*x2*x2*x2-4*x2*x2+3*x2-6); if(fx1*fx2<0){while(fabs(x1-x2)>=1e-6){x3=(x1+x2)/2;fx3=(2*x3*x3*x3-4*x3*x3+3*x3-6); if(fx3*fx1<0)x2=x3;elsex1=x3;}x=x1;printf("x=%.2lf",x);}}CH0615.txt#include<stdio.h>void main(){char i,j,k;for(i='x';i<='z';i++)for(j='x';j<='z';j++)if(i!=j)for(k='x';k<='z';k++)if(i!=k&&j!=k)if(i!='x'&&k!='x'&&k!='z')printf("a--%c b--%c c--%c",i,j,k); }CH0701.txt筛选法#include<stdio.h>void main(){int a[101],i,j;for(i=2;i<101;i++)a[i]=1;for(i=2;i<=100;i++)for(j=2;j*i<=100;j++)a[i*j]=0;for(i=2;i<=100;i++){if(a[i]==1) printf("%d ",i);}printf("\n");}CH0707.txt魔方阵#include<stdio.h>void main(){int n,i,j,a[16][16],m=1,k;while(m==1){scanf("%d",&n);if((n>0)&&(n<=15)&&(n%2!=0)) m=0;}for(i=1;i<=n;i++)for(j=1;j<=n;j++)a[i][j]=0;j=n/2+1;a[1][j]=1;for(k=2;k<=n*n;k++){i=i-1;j=j+1;if((i<1)&&(j>n)){i=i+2;j=j-1;}else{if(i<1) i=n;if(j>n) j=1;}if (a[i][j]==0)a[i][j]=k;else{i=i+2;j=j-1;a[i][j]=k;}}for (i=1;i<=n;i++){for(j=1;j<=n;j++)printf("%2d ",a[i][j]);printf("\n");}}CH0709.txt#include<stdio.h>void main(){int a[16]={1,4,9,13,21,34,55,89,144,233,377,570,671,703,812},i=0,j;scanf("%d",&j);a[15]=j;while(a[i]!=j)i++;if(i<15)printf("%d\n",i+1);elseprintf("no found\n");}CH0714.txt#include<stdio.h>void main(){char s1[100],s2[100],i,k;gets(s1);gets(s2);for(i=0;s1[i]!='\0'&&s2[i]!='\0';i++)if(s1[i]!=s2[i])break;k=s1[i]-s2[i];printf("%d\n",k);}CH0814.txt#include "stdio.h"#define N 5#define M 3float score[N][M];float a_stu[N],a_cour[M]; int r,c;void main(){float s_var();void input_stu();void aver_stu();void aver_cour();int i,j;input_stu();aver_stu();aver_cour();for (i=0;i<N;i++)printf("%.3f ",a_stu[i]); printf("\n");for(j=0;j<M;j++)printf("%.3f ",a_cour[j]); printf("\n");printf("d=%.3f",s_var()); }void input_stu(){int i,j;for(i=0;i<N;i++)for (j=0;j<M;j++)scanf("%f",&score[i][j]);}void aver_stu(){int i,j;float s;for(i=0;i<N;i++){for(j=0,s=0;j<M;j++)s+=score[i][j];a_stu[i]=s/3.0;}}void aver_cour(){int i,j;float s;for(j=0;j<M;j++){s=0;for(i=0;i<N;i++)s+=score[i][j];a_cour[j]=s/(float)N;}}float s_var(){int i;float sumx,sumxn;sumx=0.0;sumxn=0.0;for(i=0;i<N;i++){sumx+=a_stu[i]*a_stu[i];sumxn+=a_stu[i];}return(sumx/N-(sumxn/N)*(sumxn/N)); }CH0817.txt#include<stdio.h>void main(){long num;char a[100],*p=a;scanf("%ld",&num);if(!num)printf("%d",num);while(num){*p++=num%10+'0';num/=10;}*p=0;printf("%s",a);}CH1005.txt#include"stdio.h"void main(){int i,k,m,n,num[50],*p;scanf("%d",&n);p=num;for(i=0;i<n;i++)*(p+i)=i+1;i=0;k=0;m=0;while(m<n-1){if(*(p+i)!=0)k++;if(k==3){*(p+i)=0;k=0;m++;}i++;if(i==n) i=0;}while(*p==0)p++;printf("%d\n",*p);}CH1007.txt#include"stdio.h"void main(){void copystr(char *p1,char *p2,int m); int m;char str1[20],str2[20];gets(str1);scanf("%d",&m);copystr(str1,str2,m);printf("%s",str2);}void copystr(char *p1,char *p2,int m) {int n;n=0;while (n<m){n++;p1++;}while(*p1!='\0'){*p2=*p1;p1++;p2++;}*p2='\0';}CH1011.txt#include"stdio.h"#include"string.h"void main(){void sort(char s[10][6]);int i;char str[10][6];for(i=0;i<10;i++)scanf("%s",str[i]);sort(str);for(i=0;i<10;i++)printf("%s ",str[i]);}void sort(char s[10][6]){int i,j;char *p,temp[10];p=temp;for(i=0;i<9;i++)for(j=0;j<9-i;j++)if(strcmp(s[j],s[j+1])>0){strcpy(p,s[j]);strcpy(s[j],s[+j+1]);strcpy(s[j+1],p);}}CH1016.txt#include"stdio.h"void main(){char str[50],*pstr;int i,j,k,m,e10,dight,ndight,a[10],*pa;gets(str);pstr=&str[0];pa=&a[0];ndight=0;i=0;j=0;while(*(pstr+i)!='\0'){if((*(pstr+i)>='0')&&(*(pstr+i)<='9'))j++;else{if(j>0){dight=*(pstr+i-1)-48;k=1;while(k<j){e10=1;for(m=1;m<=k;m++)e10=e10*10;dight=dight+(*(pstr+i-1-k)-48)*e10;k++;}*pa=dight;ndight++;pa++;j=0;}}i++;}if(j>0){dight=*(pstr+i-1)-48;k=1;while(k<j){e10=1;for(m=1;m<=k;m++)e10=e10*10;dight=dight+(*(pstr+i-1-k)-48)*e10;k++;}*pa=dight;ndight++;j=0;}printf("num=%d\n",ndight);j=0;pa=&a[0];for(j=0;j<ndight;j++)printf("%d ",*(pa+j));printf("\n");}CH1112.txt#include<stdio.h>void main(){struct NUM{struct NUM *up;struct NUM *next;int n;}num[1000];struct NUM *p=&num[0],*p2;p->up=NULL;int t;do{scanf("%d",&t);p->n=t;p->next=p+1;p->next->up=p;p++;}while(t!=0);p--;p->up->next=NULL;p=p->up;p2=&num[0];printf("原始表:");while(p2->next)printf("%d->",(p2++)->n);printf("%d\n",p2->n);printf("反转表:");while(p->up)printf("%d->",(p--)->n);printf("%d",p->n);}SXC01.txt# include <stdio.h># include <math.h>void main(){double x,y;scanf("%lf",&x);if(x<0)y=-x;elseif(x<10)y=x*x;else y=sqrt(x);printf("y=%.6lf",y); }SXC03.txt#include <stdio.h>void main(){double a,b,c;scanf("%lf %lf",&a,&b);if(a>=20)if(b>2000) c=b+200;else c=b+180;elseif(b>1500) c=b+150;else c=b+120;printf("%.6lf",c);}SXC04.txt#include <stdio.h>void main(){float a,b,c;scanf("%f:%f",&a,&b);c= (a+b/60)*30-b*6;if(c>180) c=360-c;printf("c=%.0f\n",c);}SXC05.txt# include <stdio.h>void main(){int a,b,x,y,m,n;scanf ("%d/%d%d/%d",&a,&b,&x,&y);m=a*y;n=b*x;if (m>n)printf("%d/%d>%d/%d\n",a,b,x,y);elseif(m<n)printf("%d/%d<%d/%d\n",a,b,x,y);elseprintf("%d/%d=%d/%d\n",a,b,x,y); }SXD02.txt#include<stdio.h>void main(){int i;for(i=100;i<=200;i++){if(i%4==2&&i%7==3&&i%9==5)printf("%d\n",i);}}SXD03.txt# include<stdio.h># include<math.h>void main(){int m,a,b,x,y,i,k;scanf("%d%d",&a,&b);if (a>b) x=b,y=a;else x=a,y=b;for(m=x;m<=y;m=m++){k=sqrt(m);for (i=2;i<=k;i++)if(m%i==0)break;if(i>=k+1)printf("%d ",m);}}SXD04.txt# include<stdio.h># include<math.h>void main(){double s,a,b,c,i;a=2;b=1;s=0;for(i=1;i<=20;i++){s=s+a/b;a=a+b;b=c;}printf("%.6lf",s);}SXD06.txt#include <stdio.h>#include <math.h>void main(){int i1,i2,i3,i5,i8,ii1,ii2,ii3,ii5,ii8;double max,n;for(i8=0;i8<=2;i8++){for(i5=0;i5<=(20-8*i8)/5;i5++){for(i3=0;i3<=(20-8*i8-5*i5)/3;i3++){for(i2=0;i2<=(20-8*i8-5*i5-3*i3)/2;i2++){for(i1=0;i1<=(20-8*i8-5*i5-3*i3-2*i2);i1++){n=2000*pow(1+0.0063*12,i1)*pow(1+0.0066*12*2,i2)*pow(1+0.0069*12*3,i3)*pow(1+0. 0075*12*5,i5)*pow(1+0.0084*12*8,i8);if(n>max){max=n;ii8=i8;ii5=i5;ii3=i3;ii2=i2;ii1=i1;}}}}}printf("8年=%d 5年=%d 3年=%d 2年=%d 1年=%d\n最大收益=%.2lf\n",ii8,ii5,ii3,ii2,ii1,max);}SXE02.txt#include <stdio.h>void main(){char *p,*q,s[100];gets(s);q=s;for(p=q;*p!='\0';)p++;for(p--;p>=q;p--)putchar (*p);putchar ('\n');}#include <stdio.h>void main (){int a[4][4],i,j,max=0,b=0,c=1;for(i=0;i<4;i++)for(j=0;j<4;j++)scanf ("%d",&a[i][j]);for(i=0;i<4;i++){b=b+a[i][i];{c=c*a[i][3-i];{for(j=0;j<4;j++)if (a[i][j]>max)max=a[i][j];}}}printf ("%d\n""%d\n""%d\n",b,c,max); }SXE04.txt#include <stdio.h>#include <string.h>void main(){char str1[80],str2[80];int i=0,j=0;gets(str1);while (str1[i]!='\0')i++;while (str2[j]!='\0'){str1[i]=str2[j];i++;j++;}str1[i]='\0';printf("%s\n",str1);}SXE05.txt#include<stdio.h>#include<string.h>void main(){char a[4][20];char b[20];int i,j;for(i=0;i<4;i++)scanf("%s",a[i]);for(j=0;j<4;j++)for(i=0;i<3-j;i++){if(strcmp(a[i],a[i+1])>0){ strcpy(b,a[i]);strcpy(a[i],a[i+1]);strcpy(a[i+1],b);}}for(i=0;i<4;i++)printf("%s ",a[i]);printf("\n");}SXF01.txt#include<stdio.h>#include<string.h>void fun(char str1[100],char c1) {int i,j;for(i=j=0;str1[i]!='\0';i++)if(str1[i]!=c1)str1[j++]=str1[i];str1[j]='\0';}void main(){char str[100];char c;gets(str);scanf("%c",&c);fun(str,c);puts(str);}SXF02.txt#include<stdio.h>#include<string.h>int i,j,n;void main(){char s[10][20];scanf("%d",&n);void sortstr(char s[][20],int n); for(i=0;i<n;i++)scanf("%s",&s[i]);sortstr(s,n);for(i=0;i<n;i++)printf("%s ",s[i]);}void sortstr(char s[][20],int n) {char a[20];for(i=0;i<n;i++)for(j=i+1;j<n;j++)if(strcmp(s[i],s[j])>0){strcpy(a,s[i]);strcpy(s[i],s[j]);strcpy(s[j],a);}}SXF06.txt#include"stdio.h"#include"math.h"void main(){int IsP(int n);int a,i;for(a=301;a<=400;a=a+2){i=IsP(a);if(i)printf("%d ",a);}}int IsP(int n){int k,j;k=sqrt(n);for(j=2;j<=k;j++)if(n%j==0)break;if(j>k)return(1);else return(0); }SXF08.txt# include <stdio.h>void main(){int found(int num,int a[10]);int num,m;scanf("%d",&num);int b[10]={13,24,25,44,57,63,66,78,90,100};m=found(num,b);if (m>0)printf ("%d",m);else printf ("未找到");}found(int num,int a[10]){int i;for(i=0;i<10;i++)if (a[i]==num)return (i+1);return (0);}SXF09.txt# include <stdio.h>void main(){int i,A[10];void sort(int A[],int n);for (i=0;i<10;i++)scanf ("%d",&A[i]);sort(A,10);for (i=0;i<10;i++)printf("%d ",A[i]);}void sort(int A[],int n){int j,k,m;for (j=0;j<10;j++)for (k=0;k<9-j;k++)if (A[k]<A[k+1]){m=A[k];A[k]=A[k+1];A[k+1]=m; }}SXF10.txt#include<stdio.h>void main(){int i,A[10];void sort(int A[],int n);for(i=0;i<10;i++)scanf("%d",&A[i]);sort(A,10);for(i=0;i<10;i++)printf("%d ",A[i]);}void sort(int A[],int n){int j,k,m;for(j=0;j<10;j++)for(k=0;k<9-j;k++)if(A[k]>A[k+1]){m=A[k];A[k]=A[k+1];A[k+1]=m;}}SXG02.txt#include<stdio.h>#include<string.h>void main(){void strcopy(char*s,char*d);char a[99],b[99],*p1,*p2;gets(a);p1=a;p2=b;strcopy(p1,p2);puts(b);}void strcopy(char*s,char*d) {while (*s!='\0'){*d=*s;*s++;*d++;}*d='\0';}SXG03.txt#include<stdio.h>#include<string.h>void main(){int str_cmp(char *d,char *s);void str_cat(char *d,char *s);char a[100],b[100];int c;gets(a);gets(b);c=str_cmp(a,b);if (c>=0)puts(a);else puts(b);str_cat(a,b);puts(a);}int str_cmp(char *d,char *s){while (*d==*s){if (*d=='\0')return 0;d++;s++;}return(*d-*s);}void str_cat(char *d,char *s) {while (*d!='\0')d++;while (*s!='\0'){*d=*s;d++;s++;}*d='\0';}SXG05.txt#include<stdio.h>void main(){char str1[1000],*p1=str1;int a[1000],*p2=a,ks=0,geshu=0;gets(str1);while(*p1++){if(ks==0&&*(p1-1)>='0'&&*(p1-1)<='9')ks=1;if(ks==1&&(*(p1-1)<'0'||*(p1-1)>'9'))ks=0;if(ks&&*(p1-1)>='0'&&*(p1-1)<='9')*p2++=*(p1-1)-'0';if(ks&&(*(p1-1)>='0'&&*(p1-1)<='9')&&(*p1<'0'||*p1>'9')){*p2++=10;geshu++;}if(*p1==0)*p2=*p1;}int i,l=p2-a-1;printf("%d\n",geshu);for(i=0;i<l;i++)a[i]==10? printf(" "):printf("%d",a[i]);}SXH01.txtcvoid main(){struct worker wrk1;scanf("%s%s%d%lf",&,&wrk1.id,&wrk1.wktim,&wrk1.wage);printf("姓名=%s 身份证号=%s 工龄=%d 工资=%.2lf",,wrk1.id,wrk1.wktim,wrk1.wage);}SXH05.txt#include<stdio.h>#include<string.h>void main(){struct student{char no[4];char name[9];double english;double math;}stu[5],t;int i,j;for(i=0;i<=4;i++)scanf("%s %s %lf %lf",&stu[i].no,&stu[i].name,&stu[i].english,&stu[i].math);for(i=0;i<=4;i++)for(j=i+1;j<=4;j++)if (strcmp(stu[i].name,stu[j].name)>0){t=stu[i];stu[i]=stu[j];stu[j]=t;}else if (strcmp(stu[i].name,stu[j].name)==0)if (stu[i].english>stu[j].english){t=stu[i];stu[i]=stu[j];stu[j]=t;}else if (stu[i].english==stu[j].english)if (stu[i].math>stu[j].math){t=stu[i];stu[i]=stu[j];stu[j]=t;}for(i=0;i<=4;i++)printf("%s %s %.0lf %.0lf\n",stu[i].no,stu[i].name,stu[i].english,stu[i].math);}SXK01.txt#include<stdio.h>void main(){struct STU{struct STU *next;int num;}stu[5];int a[]={101,103,105,107,109};int *p1=a;struct STU *p2=stu;for(int i=0;i<5;i++){stu[i].num=*p1++;stu[i].next=&stu[i+1];}stu[i-1].next=NULL;while(p2->next){printf("%d ",p2->num);p2=p2->next;}printf("%d",p2->num);}SXK02.txt/*题号SXK02文件名SXK02.CPP截止日期期末考试前提交有效试题内容在[SXK01]题基础上,新增加一个职工的数据，按职工号的顺序插入链表，新插入的职工号为106。