C語言課后題答案(北郵出版社)9

1、1、li45300.0200.0chang 30chang2、#include<stdio.h>struct students char sid100; char name100; float score3; student; void main() int i; float j;Please input sid: );scanf(%s,student.sid);Please input name:);scanf(%s,);Please input 3 score:(like1,1,1)輸入逗號隔開 */scanf(%f,%f,%f,&student

2、.score0,&student.score1,&student.score2);sid = %s,student.sid);name = %s,);j=(student.score0+student.score1+student.score2)/3.0;average = %.2f,j);getch();、3#include<stdio.h>#include<string.h>#define Fsizeof(student)#define NULL 0typedef struct scoresint english; intma

3、th;int c_language;int all;TP;typedef struct studentschar sid15; charname15; TPscore;struct students *next;student;student *input()student *head,*p1,*p2;int n=0; char ch;clrscr();head=(student *)malloc(F);head ->next=NULL; do n+;nPlease input %d student message:nn,n);%dstudent sid:p1=(student *)ma

4、lloc(F);p1->next=NULL;scanf(%s,p1 ->sid);t%d student name:scanf(%s,p1 ->name);t%d student scores(englesh,math,c_language):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_l

5、anguage; if(n=1) head ->next=p1;p2=p1; elsep2->next=p1;p2=p1;ntttContinue or back (press y/n):);ch=getch();while(ch='y'|ch='Y');return head;void average1(student *head)int j;student *p;clrscr();p=head ->next;while(p) j=p ->score.all/3;nname: %staverage: %d,p->name,j);

6、p=p ->next;nnPress 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+;naverage english is : %dnaverage math is : %dnaverage

7、 c_languageis : %dt,temp1/n,temp2/n,temp3/n); student *sort(student *head)student *head1,*p,*q,*r; inttemp1=0,temp2=0,temp3=0,temp4; char s15,n15;head1=head;for(p=head1 ->next;p ->next!=NULL;p=p->next)for(q=p ->next;q;q=q ->next)r=p;if(q ->score.all>r ->score.all)r=q;if(r!=p)

8、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 ->score.math;p->score.c_l

9、anguage=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;clrscr();head2=sort

10、(head);for(p=head2 ->next;p!=NULL;p=p->next)taverage: %dtmingci: %d,p->name,p ->sid,p ->score.english,p ->score.math,p ->score.c_language,p ->score.all/3,i+);average2(head);nnttPress eny key back.);getch();void main()student *head,*p1,*p2; inti=0,j=1; head=input();doclrscr();

11、sort.nn(4):output.nnnn(1):Please choose:);scanf(%d,&i);switch(i)break;case 1: average1(head);nnPressenykeycase 2:clrscr();average2(head); retuen.);getch(); break; case 3: clrscr();p1=sort(head);for(p2=p1 ->next;p2!=NULL;p2=p2->next)ttname: %stmingci:%d,p2-nnPress eny key back.);getch(); br

12、eak;case 4: output(head); break;Your choose 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; charname15; intmoney; structwork *next;worker;int min=0,max=0;char a15,b15;worker *input()worker *head,

13、*p,*q;int n=0;char ch;head=(worker *)malloc(F); head->next=0;don+;p=(worker *)malloc(F); p->next=0;ntPlease input %d worker message : ,n);%d worker sid: ,n);scanf(%s,p-%dworker name: ,n);scanf(%s,p-%d workermoney: ,n);scanf(%d,&p->money); if(n=1)head ->next=p; q=p; max=p ->money;s

14、trcpy(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); q=p;tty/n);ch=getch();while(ch='y'|ch='Y');return head;void output()clrscr();

15、The max money is:The min money is:void main()input();output();getch();、 6、5椣據(jù)畬敤獜摴?jié)潠?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+;nn,n);nPlease inp

16、ut %d student message:%d student sid:p1=(stu*)malloc(F);p1 ->next=NULL;scanf(%d,&p1 ->sid);t%d student average:scanf(%d,&p1 ->average);if(n=1) head ->next=p1;p2=p1; elsep2->next=p1;p2=p1;ntttContinue or back (press y/n):);ch=getch();while(ch='y'|ch='Y');return

17、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;如果插入空表if(p=NULL)/*/ p=r;r->next=NULL;insert success!); else

18、while(x>p ->sid) 找到插入的位置，按學號大小。/* （找到位置或者到了表尾都*/會跳出循環(huán)）if(p ->next=NULL)break; p=p->next; 插到中間位置if(x<p ->sid)/* */r->sid=p ->sid; r ->average=p ->average;p->sid=x;p->average=y;r->next=p ->next;p->next=r;insert success!);學號不能相同else if(x=p ->sid)/* */Erro

19、r ->your input this same sid.);*/插到末尾 else/*p->next=r;r->next=NULL;insert success!); return head;的結點的指針得到位置為n stu *get(stu *head,int n) /*/stu *p;int i;p=head ->next;return head;if(n=0)elsefor(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=h

20、ead ->next;if(!p)list is empty.*/ 表空else*/while(p)查找學號為/*的結點的指針sidi+;*/sid標記學號為/*的結點的位置if(p->sid=sid)*/temp=1;break; /*temp=1標記找到了p=p ->next;if(temp=1) /*如果有學號為sid 的結點*/*/的前一個結點的指針得到sid q=get(head,i -1);/* q->next=p ->next;free(p);ndelete sucess !);return head; else/* 沒有找到 */nNO this

21、data.n);return head; void print(stu *head)stu *p;p=head ->next;list is empty.press eny key back.);getch();while(p)%d :t%d ,p ->sid,p ->average);p=p ->next; main()stu *p1,*p2;int n,i=0,j=0;do clrscr();char ch1;head=create();1. insert. );2. select.);3. delect.);4. print list. );5. EXIT );.

22、choice (1 -ch1=getch();switch(ch1)case '1': clrscr();please input insert sid. and average(like 1,1):);scanf(%d,%d,&i,&j);head=insert(head,i,j);nnPress eny key back.);getch();break;case '2': clrscr();input you want to selete sid: );scanf(%d,&n);p1=select(head,n);if(p1)sid:

23、%dtaverage:%d,p1->sid,p1 ->average);No this data.);elsennPress eny key back.);getch();break;'3':casePlease input you want delete sid:);scanf(%d,&n);head=delete(head,n);nnPress eny key back.);getch();break; case '4': clrscr();printf(All information :);print(head);nnPress eny key back.);getch();break;case '5': return;press eny keynYour enter is not right.while(n);、7 #include<stdio.h>#define F sizeof(L)typedef struct listchar data; struct list*next;L;L *set_list()L *head,*p1,*p2;char c;int n=0;*/head=(L *)malloc(F); head ->next=0;