王天锐

[wangtianrui]

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 ;
}

[Feng-YuanQing]

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