学生信息管理系统
#include<stdio.h>
#include<string.h>
#define LEN sizeof(struct student)
struct student
{
char name[20];
int num ;
int score;
struct student *next ;
};
struct student *head , *p , *m , *x ;
void shanchu(struct student *x)
{
struct student *ted ;
int i = 1 ;
char ID[20] ;
printf("输入想删除学生的姓名：");
scanf("%s", ID );
ted = head ;
while(ted)
{
if( strcmp(ted->name,ID)==0 )
{
if( i == 1 )
{
head = head->next ;
}
else
{
m->next = ted->next;
free(ted);
}
}
m = ted ;
ted = ted->next ;
i = i + 1 ;
}
}
void shuchu( struct student *x )
{
struct student *ted ;
ted = head ;
while(ted)
{
printf("%s的学号为:%d\t成绩为:%d\n", ted->name , ted->num , ted->score);
ted = ted->next ;
}
}
void creat()
{
p = (struct student *)malloc( LEN ) ;
printf("请按照姓名，学号，分数的顺序输入。若需停止则输入 stop 0 0\n");
scanf("%s %d %d", p->name , &p->num , &p->score );
head = p ;
while( strcmp( p->name , "stop") != 0 )
{
m = p ;
p = (struct student *)malloc( LEN ) ;
scanf("%s %d %d", p->name , &p->num , &p->score );
m->next = p ;
}
p->next = NULL;
}
int main()
{
int i , j , n ;
for( i = 1 ; i <= 100 ; i++)
{
printf("_");
if( i == 50 )
{
printf("\n");
for( j = 1 ; j <= 16 ; j ++)
{
printf(" ");
}
printf("学生学籍管理系统");
for( j = 1 ; j <= 16 ; j ++)
{
printf(" ");
}
printf("\n");
for( j = 1 ; j <= 16 ; j++)
{
printf(" ");
}
printf("1.学生学号的添加。");
for( j = 1 ; j <= 15 ; j ++)
{
printf(" ");
}
printf("\n");
for( j = 1 ; j <= 16 ; j++)
{
printf(" ");
}
printf("2.学生学号的查看。");
for( j = 1 ; j <= 15 ; j ++)
{
printf(" ");
}
printf("\n");
for( j = 1 ; j <= 16 ; j++)
{
printf(" ");
}
printf("3.学生学号的删除。");
for( j = 1 ; j <= 15 ; j ++)
{
printf(" ");
}
printf("\n");
}
}
printf("\n\n\n");
for( i = 1 ; i <= 1000 ; i++)
{
scanf("%d", &n );
switch(n)
{
case 1 : creat();break ;
case 2 : shuchu( head );break ;
case 3 : shanchu( head );break ;
default : printf("请输入正确的选项\n");continue;
}
}
return 0 ;
}
学生信息管理系统