C_Student

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// 定义数据
struct Student
{
    int id;
    char name[16];
    int scores[3];
};
int n;
int size = n * sizeof(Student);
Student* data = (Student*) malloc(size);  // 数据源：存储所有数据

int count = 0;  // 总个数

int input(Student* s)
{
    printf("ID:");
    scanf("%d",&s->id);

    printf("Name:");
    //gets(s->name);
    scanf("%s",s->name);

    printf("Score:");
    int a, b, c;
    scanf("%d,%d,%d", &a, &b, &c);
    s->scores[0] = a;
    s->scores[1] = b;
    s->scores[2] = c;

    return 0;
}

int add(const Student* s)
{
    data[count] = *s;
    count++;
    return 0;   // 总是成功
}

void list_all()
{
    printf("ID \tName \tScore \n");
    printf("----------------------\n");
    for(int i=0; i<count; i++)
    {
        Student* s = &data[i];
        printf("%d \t%s \t%d,%d,%d\n",
            s->id,
            s->name,
            s->scores[0],
            s->scores[1],
            s->scores[2]);
    }
    printf("----------------------\n");
}

// 按照名称查找
Student* find(const char* name)
{
    for(int i=0; i<count; i++)
    {
        Student* s = &data[i];
        if(strcmp(name,s->name) == 0)
        {
            return s;
        }
    }
    return NULL;
}

int main()
{
    char cmdline[128];
    printf("请输入个数：");
    scanf("%d",&n);
    printf("您可以输入%d个数据\n",n);

    while(1)
    {
        printf(">");
        scanf("%s", cmdline);

        //printf("cmd: %s\n",cmdline);

        // 退出
        if(strcmp(cmdline,"exit") == 0)
        {

            printf("now exit...\n");
            free(data);
            break;
        }

        // 菜单处理
        if(strcmp(cmdline,"add") == 0)
        {
            Student s;
            input(&s);
            add(&s);
            continue;
        }
        if(strcmp(cmdline,"list") == 0)
        {
            list_all();
            continue;
        }
        if(strcmp(cmdline,"count") == 0)
        {
            printf("total: %d \n", count);
            continue;
        }
        if(strcmp(cmdline,"find") == 0)
        {
            printf("enter Name: ");
            char name[16];
            scanf("%s",name);

            Student* s = find(name);
            if(s)
            {
                printf("found: ID:%d, Name:%s,Score:%d,%d,%d \n",
                    s->id,s->name,
                    s->scores[0],
                    s->scores[1],
                    s->scores[2]);
            }
            else
            {
                printf("Not Found\n");
            }

            continue;
        }
        printf("Bad Input\n");
    }


    return 0;
}


int test()
{
    Student s;
    //input(&s);
    s.id = 1024;
    strcpy(s.name, "lvhao");
    s.scores[0] = 70;
    s.scores[1] = 80;
    s.scores[2] = 90;

    add(&s);

    list_all();
    return 0;
}