一个简单学生管理系统初步框架

一个简单学生管理系统初步框架
用了4个函数谢了增删改查
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct student{
int xuehao;
char xingming[100];
char xingbie[50];
int year;
int banji;
int score1;
int score2;
struct student *next;
};
void fun1(struct student *head)
{
struct student *p;struct student o;
o=head;
p=(struct student)malloc(sizeof(struct student));
p->next=NULL;
if(head->next!=NULL)
{
printf(“输入学号 姓名 性别 年龄 班级 成绩1 成绩2\n”);
scanf("%d%s%s%d%d%d%d",&p->xuehao,&p->xingming,&p->xingbie,&p->year,&p->banji,&p->score1,&p->score2);
printf(“你想加入哪个学生后面，输入学号：”);
int n;
scanf("%d",&n);
while(o->next!=NULL)
{
o=o->next;
if(o->xuehaon)
{
n=100;break;
}
}
if(n100)
{
p->next=o->next;
o->next=p;
}
head=head->next;
if(n!=100)
printf(“学号错误\n”);
printf(“遍历结果\n”);
while(head!=NULL)
{
printf("%d %s %s %d %d %d %d\n",head->xuehao,head->xingming,head->xingbie,head->year,head->banji,head->score1,head->score2);
head=head->next;
}
}
else if(head->next==NULL)
{
printf(“输入学号 姓名 性别 年龄 班级 成绩1 成绩2\n”);
scanf("%d%s%s%d%d%d%d",&p->xuehao,&p->xingming,&p->xingbie,&p->year,&p->banji,&p->score1,&p->score2);
head->next=p;
p->next=NULL;
head=head->next;
printf(“遍历结果\n”);
while(head!=NULL)
{
printf("%d %s %s %d %d %d %d\n",head->xuehao,head->xingming,head->xingbie,head->year,head->banji,head->score1,head->score2);
head=head->next;
}
}
}
void fun2(struct student *head)
{
printf(“输入你希望删除的成员学号：”);
int a;struct student *p;struct student *o;
scanf("%d",&a);o=head;
while(o!=NULL)
{

if(o->xuehao==a)
{
	p->next=o->next;
	break;
}
p=o;
o=o->next;

}head=head->next;
printf(“遍历结果\n”);
if(head!=NULL)
{
while(head!=NULL)
{
printf("%d %s %s %d %d %d %d\n",head->xuehao,head->xingming,head->xingbie,head->year,head->banji,head->score1,head->score2);
head=head->next;
}}
else
printf(" 无信息\n");

}
void fun3(struct student *head)
{
int n;
printf(“输入你希望查找的成员学号：”);
scanf("%d",&n);
printf("\n");
while(head!=NULL)
{
if(head->xuehaon)
{
printf(“学生姓名是：%s\n”,head->xingming);
}
head=head->next;
}
}
void fun4(struct student *head)
{
int n;
printf(“输入你希望修改的成员学号：”);
scanf("%d",&n);struct student *o;o=head;
while(o!=NULL)
{
if(o->xuehaon)
{
break;
}
o=o->next;
}int x;char ace[50];
printf(“输入你希望修改的东西 学号 1；姓名 2；性别 3；年龄 4；班级 5；成绩1 6；成绩2 7； :”);
scanf("%d",&n);
if(n1)
{
printf(“输入修改后的学号 :”);
scanf("%d",&x);
o->xuehao=x;
}
else if(n3)
{
printf(“输入修改后的性别 ：”);
scanf("%s",ace);
strcpy(o->xingbie,ace);
}
else if(n2)
{
printf(“输入修改后的姓名 ：”);
scanf("%s",ace);
strcpy(o->xingming,ace);
}
else if(n4)
{
printf(“输入修改后的年龄 :”);
scanf("%d",&x);
o->year=x;
}
else if(n5)
{
printf(“输入修改后的班级 ：”);
scanf("%d",&x);
o->banji=x;
}
else if(n6)
{
printf(“输入修改后的成绩1 ：”);
scanf("%d",&x);
o->score1=x;
}
else if(n==7)
{
printf(“输入修改后的成绩2 ：”);
scanf("%d",&x);
o->score2=x;
}
printf(“遍历结果\n”);
head=head->next;
while(head!=NULL)
{
printf("%d %s %s %d %d %d %d\n",head->xuehao,head->xingming,head->xingbie,head->year,head->banji,head->score1,head->score2);
head=head->next;
}
}

int main()
{
int n;
struct student *p,head,q;
printf(“输入学生个数:”);
scanf("%d",&n);
head=(struct student)malloc(sizeof(struct student));
head->next=NULL;
int i;
printf(“输入学号 姓名 性别 年龄 班级 成绩1 成绩2\n”);
for(i=0;i<n;i++)
{
p=(struct student)malloc(sizeof(struct student));
scanf("%d%s%s%d%d%d%d",&p->xuehao,&p->xingming,&p->xingbie,&p->year,&p->banji,&p->score1,&p->score2);
if(head->next==NULL)
{
head->next=p;
}
else
{
q->next=p;
}
q=p;
}
q->next=NULL;
int x=1;
while(x)
{
printf(“输入下一步的功能：增加 1; 删除 2; 查找 3; 修改 4; 退出：0 \n”);
scanf("%d",&x);
switch(x)
{
case 1:
fun1(head);
break;
case 2:
fun2(head);
break;
case 3:
fun3(head);
break;
case 4:
fun4(head);
break;
case 0:
break;
}
}
return 0;
}