数据结构实训：学生信息系统应用
#include <stdio.h>#include <malloc.h>
#include <string.h>
#include <stdlib.h>
#define size 25
typedef struct node
{
char name;
int no;
char sex;
int age;
float english;
float math;
float ds;
float os;
float total;
}NODE;
typedef struct node1
{
NODE data;
struct node1 *next;
}student;
typedef struct node2
{
char data;
float no1;
struct node2*link ;
}ListNode;
student *p;
student *head;
float total(student *p)
{
float tot;
tot=p->data.ds+p->data.english+p->data.math+p->data.os;
printf("total=%5.0f\n",tot);
return tot;
}
student *crelist()
{
student *head,*p,*q;
int i;
float zf;
head=(student*)malloc(sizeof(student));
printf("xingming:");
scanf("%s",&head->data.name);
printf("xuehao:");
scanf("%d",&head->data.no);
printf("xingbie:");
scanf("%s",&head->data.sex);
printf("nianling:");
scanf("%5d",&head->data.age);
printf("shuruchengji\n");
printf("englishmathdsos\n");
scanf("%f%f%f%f",&head->data.english,&head->data.math,&head->data.ds,&head->data.os);
zf=total(head);
head->data.total=zf;
p=head;
for (i=1;i<=size;i++)
{
q=(student*)malloc(sizeof(student));
printf("xingming:");
scanf("%s",&q->data.name);
printf("xuehao:");
scanf("%d",&q->data.no);
printf("xingbie:");
scanf("%s",&q->data.sex);
printf("nianling:");
scanf("%d",&q->data.age);
printf("shuruchengji\n");
printf("english math ds os\n");
scanf("%f%f%f%f",&q->data.english,&q->data.math,&q->data.ds,&q->data.os);
zf=total(q);
q->data.total=zf;
p->next=q;
p=q;
}
p->next=NULL;
return head;
}
void prilist(student *head)
{
p=head;
printf("xingmingxuehaoxingbie\n");
printf("english math os ds\n");
while (p!=NULL)
{
printf("%s %d %s\n",p->data.name,p->data.no,p->data.sex);
printf("%5.0f%5.0f%5.0f%5.0f\n",p->data.english,p->data.math,p->data.ds,p->data.os);
printf("%5.0f\n",p->data.total);
p=p->next;
}
}
void print(student *head)
{
p=head;
while (p!=NULL)
{
printf("%s\n",p->data.name);
p=p->next;
}
}
void tjstu(student *p,student *head)
{
student *p1,*p2;
p1=head;
p2=p1->next;
while (p2!=NULL &&p2->data.no<p->data.no)
{
p1=p2;
p2=p2->next;
}
p1->next=p;
p->next=p2;
}
student *chazhao(student *head)
{
student *p;
int xuan;
int no;
char name;
printf("1)anxuehao\n2)anxingming\n");
scanf("%d",&xuan);
if(xuan==1)
{
p=head;
printf("shuruxuehao:");
scanf("%d",&no);
while(p->data.no!=no)
p=p->next;
}
else if(xuan==2)
{
p=head;
printf("shuruxingming\n");
scanf("%s",&name);
while (strcmp(p->data.name,name)!=0)
p=p->next;
}
else
printf("error");
printf("%d,%s,%s\n",p->data.no,p->data.name,p->data.sex);
return p;
}
void shanchu(student *head)
{
int sc;
student *p,*q;
p=chazhao(head);
if (p==NULL)
{
printf("wu");
return;
}
printf("queding1fanhui0\n");
scanf("%d",&sc);
if(sc==1)
{
q=head;
while(q!=NULL&&q->next!=p)
q=q->next;
q->next=p->next;
free(p);
printf("shanchujieshu\n");
}
}
void xiugai(student *head)
{
p=chazhao(head);
printf("shuruxuehao:");
scanf("%d",&p->data.no);
printf("shuruxingming:");
scanf("%s",&p->data.name);
printf("shuruxingbie:");
scanf("%s",&p->data.sex);
printf("shuruchengji\n");
printf("english math ds os\n");
scanf("%f%f%f%f",&p->data.english,&p->data.math,&p->data.ds,&p->data.os);
}
void ListInsert1(ListNode**L,float no)
{
ListNode *p, *q, *curr ;
p = (ListNode*)malloc(sizeof(ListNode));
p->no1=no;
p->link = NULL;
if((*L) == NULL)
{
(*L) = p;
return;
}
else if(no <=(*L)->no1)
{
p->link = (*L);
(*L) = p;
return;
}
else
{
curr = (*L);
q = (*L);
while(q != NULL && (no>=q->no1))
{
curr = q;
q = q->link;
}
p->link = curr->link;
curr->link = p;
return;
}
}
void Print1(ListNode*L)
{
ListNode *curr = L;
while(curr!=NULL)
{
printf("%5.0f\n",curr->no1);
curr=curr->link ;
}
}
void ListInsert2(ListNode**L,char x[])
{
ListNode *p, *q, *curr ;
p = (ListNode*)malloc(sizeof(ListNode));
strcpy(p->data,x);
p->link = NULL;
if((*L) == NULL)
{
(*L) = p;
return;
}
else if(strcmp(x,(*L)->data) <= 0)
{
p->link = (*L);
(*L) = p;
return;
}
else
{
curr = (*L);
q = (*L);
while(q != NULL && strcmp(x,q->data) >= 0)
{
curr = q;
q = q->link;
}
p->link = curr->link;
curr->link = p;
return;
}
}
void Print2(ListNode*L)
{
ListNode *curr = L;
while(curr!=NULL)
{
printf("%s\n",curr->data);
curr=curr->link ;
}
}
void save()
{
FILE *fp;
int i;
if((fp=fopen("ds.dat","wb"))==NULL)
{
printf("cannot open file\n");
return;
}
for (i=0;i<size;i++)
if(fwrite(head,sizeof(student),1,fp)!=1)
printf("file write error\n");
fclose(fp);
}
void save1()
{
FILE *fp;
int i;
if((fp=fopen("new1.dat","wb"))==NULL)
{
printf("cannot open file\n");
return;
}
for (i=0;i<size;i++)
if(fwrite(head,sizeof(student),1,fp)!=1)
printf("file write error\n");
fclose(fp);
}
void save2()
{
FILE *fp;
int i;
if((fp=fopen("new2.dat","wb"))==NULL)
{
printf("cannot open file\n");
return;
}
for (i=0;i<size;i++)
if(fwrite(head,sizeof(student),1,fp)!=1)
printf("file write error\n");
fclose(fp);
}
void showstumenu()
{
printf("**************************");
printf(" xueshengxinxi ");
printf("**************************\n");
printf("0) jianbiao\n");
printf("1) tianjia\n");
printf("2) zhanshi\n");
printf("3) shanchu\n");
printf("4) xiugai\n");
printf("5) chazhao\n");
printf("6) paixu1(zhongchengji)\n");
printf("7) paixu2(xingming)\n");
printf("8) beifen\n");
printf("9) dayin\n");
printf("10) over\n");
printf("\n\n");
}
void main()
{
int xx;
showstumenu();
printf("shurushuzi:");
scanf("%d",&xx);
if (xx==0)
head=crelist();
save();
for(;;)
{
int a;
showstumenu();
printf("shurushuzi:");
scanf("%d",&a);
switch (a)
{
case 1:
{
float tota;
printf("tianjia\n");
p=(student*)malloc(sizeof (student));
printf("xingming:");
scanf("%s",&p->data.name);
printf("xuehao:");
scanf("%d",&p->data.no);
printf("xingbie:");
scanf("%s",&p->data.sex);
printf("english math ds os\n");
scanf("%f%f%f%f",&p->data.english,&p->data.math,&p->data.ds,&p->data.os);
tota=total(head);
p->data.total=tota;
tjstu(p,head);
break;
}
case 2:
{
printf("zhanshi\n");
prilist(head);
break;
}
case 3:
{
printf("shanchu\n");
shanchu(head);
break;
}
case 4:
{
printf("xiugai\n");
xiugai(head);
break;
}
case 5:
{
p=chazhao(head);
break;
}
case 6:
{
int i ;
ListNode *head1 ;
p=head;
head1=NULL ;
for(i = 0;i < 3;i++)
{
ListInsert1(&head1,p->data.total);
p=p->next;
}
printf("链表中数据输出如下：\n");
Print1(head1);
save1();
break;
}
case 7:
{
int i ;
ListNode *head1 ;
p=head;
head1=NULL ;
for(i = 0;i < 3;i++)
{
ListInsert2(&head1,p->data.name);
p=p->next;
}
printf("链表中数据输出如下：\n");
Print2(head1);
save2();
break;
}
case 8:
{
FILE *in,*out;
if((in=fopen("ds.dat","r"))==NULL)
{
printf("cannot open infile\n");
exit(0);
}
if((out=fopen("ds1.dat","w"))==NULL)
{
printf("cannot open outfile\n");
exit (0);
}
while(!feof(in))fputc(fgetc(in),out);
fclose(in);
fclose(out);
return;
}
case 9:
{
printf("daying");
print(head);
}
case 10:
{
printf("jieshu");
return;
}
}
}
}
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