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请用C语言编出一个简单的宠物管理系统。

萌宠菠菠乐园
2024-08-21 00:53

#include<stdio.h>
#include<string.h>
#include<malloc.h>
#define E "%s%s%s%d"
#define F p->num,p->name,p->sex,&p->score
#define G " %s %-5s %s %4dn"
#define H i->num,i->name,i->sex,i->score
#define J "number name sex scoren"
struct student /*结构体定义*/
{char num[5];
char name[20];
char sex[2];
int score;
struct student *next;
};
int m=1;

struct student *creat() /*建立单向动态链表函数*/
{struct student *head;
struct student *p,*q;
head=p=q=(struct student *)malloc(sizeof(struct student));
printf("please input the information of students:n");
while(scanf(E,F),strcmp(p->num,"0")!=0)
{p=(struct student *)malloc(sizeof(struct student));
q->next=p;q=p;m++;}
q->next=NULL;
return(head);}
/*以下根据学生的姓名和学号进行操作*/

void stu_printf(struct student *p) /*输出全部学生信息函数*/
{struct student *i;
printf(J);
for(i=p;i!=NULL;i=i->next) printf(G,H);}

void stu_search(struct student *p,char *c) /*查询学生信息函数*/
{struct student *i;int n=0;
for(i=p;i!=NULL;i=i->next)
if(strcmp(i->num,c)==0||strcmp(i->name,c)==0)
{printf(J);printf(G,H);}
else n++;
if(n==m) printf("not foundn");}

void stu_correct(struct student *p,char *c) /*修改学生信息函数*/
{struct student *i;int n=0;
for(i=p;i!=NULL;i=i->next)
if(strcmp(i->num,c)==0||strcmp(i->name,c)==0)
scanf(E,i->num,i->name,i->sex,&i->score);
else n++;
if(n==m) printf("not foundn");
printf("n");
stu_printf(p);
}

void stu_delete(struct student *p,char *c) /*删除学生信息函数*/
{struct student *i,*j;int n=0;
for(i=p;i!=NULL;i=i->next)
if(strcmp(i->num,c)==0||strcmp(i->name,c)==0) break;
else n++;
if(n==m) printf("not foundn");
else {for(j=p;j->next!=i;j=j->next);
j->next=i->next;}
printf("n");
stu_printf(p);
}

void stu_new_down(struct student *p,char *c) /*插入学生信息函数*/
{struct student *i,*j;int n=0;
for(i=p;i!=NULL;i=i->next)
if(strcmp(i->num,c)==0||strcmp(i->name,c)==0) break;
else n++;
if(n==m) printf("not foundn");
else {j=(struct student *)malloc(sizeof(struct student));
j->next=i->next;i->next=j;
scanf(E,j->num,j->name,j->sex,&j->score);}
printf("n");
stu_printf(p);
}

main()
{char a[20];char x;int flag=1,q;
struct student *head;
void (*pt)(struct student *p,char *c); /*指向函数的指针变量*/
head=creat(); /*建立单向动态链表*/
while(flag)
{printf("please choose the operatian:n");
printf("1:searchn2:corretn3:deleten4:newn");
printf("choose:");
scanf("%d",&q);
switch(q) /*菜单*/
{case 1:pt=stu_search;break;
case 2:pt=stu_correct;break;
case 3:pt=stu_delete;break;
case 4:pt=stu_new_down;break;
default:printf("ERRORn");}
printf("please input the number or namen");
scanf("%s",a);
(*pt)(head,a);
printf("continue or not?(y/n)n"); /*循环的菜单*/
getchar();
x=getchar();
if(x=='n') flag=0;}
getchar();
getchar();
}