C语言课后题答案9

1、1、li45300.0chang 30200.0chang2、#include<stdio.h>struct studentschar sid100;char name100;float score3;student;void main()int i; float j;printf("nPlease input sid:");scanf("%s",student.sid);printf("nPlease input name:");scanf("%s",);printf(&quo

2、t;nPlease input 3 score:(like1,1,1)");/* 输入逗号隔开*/scanf("%f,%f,%f",&student.score0,&student.score1,&student.score2);printf("nsid = %s",student.sid);printf("nname = %s",);j=(student.score0+student.score1+student.score2)/3.0;printf("navera

3、ge = %.2f",j);getch();3、#include<stdio.h>#include<string.h>#define F sizeof(student)#define NULL 0typedef struct scoresint english;int math;int c_language;int all;TP;typedef struct studentschar sid15; char name15;TP score;struct students *next;student;student *input()student *head,*

4、p1,*p2;int n=0;char ch;clrscr();head=(student *)malloc(F);head->next=NULL;don+;printf("nnPlease input %d student message:nn",n);printf("t%d student sid:",n);p1=(student *)malloc(F);p1->next=NULL;scanf("%s",p1->sid);printf("nt%d student name:",n);scanf

5、("%s",p1->name);printf("nt%d student scores(englesh,math,c_language):",n);scanf("%d,%d,%d",&p1->score.english,&p1->score.math,&p1->score.c_language); p1->score.all=p1->score.english+p1->score.math+p1->score.c_language; if(n=1) head-&g

6、t;next=p1;p2=p1; elsep2->next=p1;p2=p1;printf("nntttContinue or back (press y/n):");ch=getch();while(ch='y'|ch='Y');return head;void average1(student *head)student *p;int j;clrscr();p=head->next;while(p) j=p->score.all/3;printf("nnname:%staverage: %d",p-&

7、gt;name,j);p=p->next;printf("nnnPress eny key return.");getch();void average2(student *head)student *p;int n=0,temp1=0,temp2=0,temp3=0;p=head->next;while(p)temp1+=p->score.english;temp2+=p->score.math;temp3+=p->score.c_language;p=p->next;n+;printf("nnaverageenglishis

8、:%dnaveragemathis:%dnaveragec_languageis : %dt",temp1/n,temp2/n,temp3/n);student *sort(student *head)student *head1,*p,*q,*r; int temp1=0,temp2=0,temp3=0,temp4; char s15,n15; head1=head;for(p=head1->next;p->next!=NULL;p=p->next)r=p; for(q=p->next;q;q=q->next)if(q->score.all>

9、;r->score.all) r=q;if(r!=p)strcpy(s,p->sid);strcpy(n,p->name); temp1=p->score.english; temp2=p->score.math; temp3=p->score.c_language; temp4=p->score.all; strcpy(p->sid,r->sid);strcpy(p->name,r->name); p->score.english=r->score.english;p->score.math=r->sc

10、ore.math; p->score.c_language=r->score.c_language; p->score.all=r->score.all;strcpy(r->sid,s);strcpy(r->name,n);r->score.english=temp1;r->score.math=temp2;r->score.c_language=temp3;r->score.all=temp4;return head1;void output(student *head)student *head2,*p;int i=1; clrs

11、cr(); head2=sort(head);for(p=head2->next;p!=NULL;p=p->next)printf("nnname: %stsid: %stenglish: %dtmath: %dtc_language: %dtaverage: %dtmingci: %d ",p->name,p->sid,p->score.english,p->score.math,p->score.c_language,p->score.all/3,i+);average2(head);printf("nnnttP

12、ress eny key back.");getch();void main()student *head,*p1,*p2; int i=0,j=1;head=input();doclrscr();printf("nn(1):average1.nn(2):Please choose:");scanf("%d",&i);switch(i)case 1: average1(head);break;case 2: clrscr();average2(head);average2.nn(3):printf("nnnPresssort.

13、nn(4):output.nnneny keyretuen.");getch();break;case 3: clrscr();p1=sort(head); for(p2=p1->next;p2!=NULL;p2=p2->next) printf("nttname: %stmingci:%d",p2->name,j+);printf("nnnPress eny key back.");getch(); break;case 4: output(head);break;default: printf("nYour ch

14、oose is not right.");break;while(i!=-1);4、#include<stdio.h>#include<string.h>#define NULL 0#define F sizeof(worker)typedef struct workchar sid15; char name15; int money;struct work *next;worker;int min=0,max=0;char a15,b15;worker *input()worker *head,*p,*q;int n=0; char ch;head=(wor

15、ker *)malloc(F); head->next=0; don+;p=(worker *)malloc(F); p->next=0;printf("nntPlease input %d worker message : ",n); printf("n%d worker sid: ",n);scanf("%s",p->sid); printf("n%d worker name: ",n);scanf("%s",p->name); printf("n%d wo

16、rker money: ",n);scanf("%d",&p->money); if(n=1)head->next=p; q=p;max=p->money;strcpy(a,p->name);min=p->money;strcpy(b,p->name);elseq->next=p;if(p->money>max) max=p->money;strcpy(a,p->name); if(p->money<min) min=p->money;strcpy(b,p->name

17、);q=p;printf("ntty/n");ch=getch();while(ch='y'|ch='Y');return head;void output()clrscr();printf("nThe max money is:printf("nThe min money is:%dttname is: %snn",max,a);%dttname is: %s",min,b);void main()input();output();getch();5、 6、#include"stdio.h&

18、quot;#define F sizeof(stu)#define NULL 0typedef struct studentint sid;int average;struct student *next;stu;stu *head;stu *create()stu *p1,*p2;int n=0;char ch;head=(stu *)malloc(F);head->next=NULL;don+;printf("nnPlease input %d student message:printf("t%d student sid:",n);p1=(stu *)

19、malloc(F);p1->next=NULL;scanf("%d",&p1->sid);printf("nt%d student average:",n);scanf("%d",&p1->average);if(n=1)nn",n); head->next=p1;p2=p1; elsep2->next=p1;p2=p1;printf("nntttContinue or back (press y/n):");ch=getch();while(ch='

20、y'|ch='Y');return head;stu *select(stu *head,int x)stu *s;s=head->next;while(s)if(s->sid=x)break;s=s->next;return s;stu *insert(stu *head,int x,int y)stu *p,*r,*q;clrscr();p=head->next;r=(stu *)malloc(sizeof(stu);r->sid=x;r->average=y;if(p=NULL)/*如果插入空表*/p=r;r->next=

21、NULL;printf("ninsert success!");else会跳出循环）while(x>p->sid)/* 找到插入的位置，按学号大小。*/if(p->next=NULL)break; p=p->next;if(x<p->sid)/* 插到中间位置*/（找到位置或者到了表尾都r->sid=p->sid; r->average=p->average; p->sid=x; p->average=y; r->next=p->next; p->next=r;printf("

22、;ninsert success!");else if(x=p->sid)/* 学号不能相同*/printf("nError->your input this same sid.");else/* 插到末尾 */p->next=r; r->next=NULL; printf("ninsert success!");return head;stu *get(stu *head,int n)/* 得到位置为n 的结点的指针*/stu *p;int i; p=head->next;if(n=0)return head;e

23、lsefor(i=1;i<n;i+) p=p->next; return p;stu *delete(stu *head,int sid)stu *p,*q;int temp=0,i=0;p=head->next;if(!p)printf("nlist is empty.press eny key back.");getch();return head;/*表空 */elsewhile(p)/* 查找学号为sid 的结点的指针*/i+;/*标记学号为sid的结点的位置*/if(p->sid=sid)temp=1;break; /*temp=1标记找到

24、了*/p=p->next;if(temp=1) /* 如果有学号为sid 的结点 */q=get(head,i-1);/* 得到 sid 的前一个结点的指针q->next=p->next;free(p);printf("nndelete sucess !");return head;*/else/* 没有找到 */printf("nnNO this data.n");return head;void print(stu *head)stu *p;p=head->next;if(!p)printf("nlist is em

25、pty. press eny key back.");getch(); while(p)printf("n%d :t%d ",p->sid,p->average);p=p->next;main()stu *p1,*p2;char ch1;int n,i=0,j=0;head=create();doclrscr();printf("n1. insert.");printf("n2. select.");printf("n3. delect.");printf("n4. print

26、 list.");printf("n5. EXIT");printf("n.choice (1-5).");ch1=getch();switch(ch1)case '1': clrscr();printf("nplease input insert sid. and average(like 1,1):");scanf("%d,%d",&i,&j);head=insert(head,i,j);printf("nnnPress eny key back."

27、);getch();break;case '2': clrscr();printf("ninput you want to selete sid:");scanf("%d",&n);p1=select(head,n);if(p1) printf("nsid:%dtaverage:%d",p1->sid,p1->average);elseprintf("nNo this data.");printf("nnnPress eny key back.");getch

28、();break;case'3':clrscr();printf("nPlease input you want delete sid:scanf("%d",&n);head=delete(head,n);printf("nnnPress eny key back.");getch();break;");case'4': clrscr();printf("All information :");print(head);printf("nnnPress eny key back.");getch();break;case '5': return;default: printf("nnYour enter is not right.press eny key back.");getch();while(n);7、#include<stdio.h>#define F sizeof(L)typedef struct listchar data; struct list *next;L;L *set_l