| 网站首页 | 业界新闻 | 小组 | 威客 | 人才 | 下载频道 | 博客 | 代码贴 | 在线编程 | 编程论坛
欢迎加入我们,一同切磋技术
用户名:   
 
密 码:  
共有 1325 人关注过本帖
标题:学生成绩管理系统 c语言算法求助!
只看楼主 加入收藏
Amiche
Rank: 1
等 级:新手上路
帖 子:1
专家分:0
注 册:2016-12-15
收藏
 问题点数:0 回复次数:0 
学生成绩管理系统 c语言算法求助!
https://bbs.bccn.net/thread-472070-1-2.html

可不可以请问一下这个帖子里的代码要怎么写算法啊 我们小组作业也是这个 但是我不会写算法QAQ

不知道能不能发帖子里的代码 我斗胆发在下面了。。。。。

程序代码:
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
struct student1
{
    int id;
    char name[10];
    int gender;
    int College;
    int data[10];
};

struct student2
{
    int id;
    char name[10];
    char gender[4];
    char College[30];
    int data[10];
    float average;
}student2[100];

struct Gender
{
    int id;
    char gender[4];
};

struct College
{
    int id;
    char College[30];
};

void getGender(char gender[], int genderId)
{
    FILE *p;
    struct Gender stGender;
    p = fopen("d:\\S_Info.txt", "rb+");
    if (p == NULL)
    {
        printf("文件打开失败!\n");
    }
    else
    {
        while (fscanf(p, "%d %s", &stGender.id, stGender.gender) != EOF)
        {
            if (stGender.id == genderId)
            {
                memcpy(gender, stGender.gender, 4);
                break;
            }
        }
        fclose(p);
    }
}

void getCollege(char College[], int CollegeId)
{
    FILE *p;
    struct College stCollege;
    p = fopen("d:\\C_Info.txt", "rb+");
    if (p == NULL)
    {
        printf("文件打开失败!\n");
    }
    else
    {
        while (fscanf(p, "%d %s", &stCollege.id, stCollege.College) != EOF)
        {
            if (stCollege.id == (CollegeId + 1))
            {
                memcpy(College, stCollege.College, 30);
                break;
            }
        }
        fclose(p);
    }
}

void read()
{
    int i = 0,j = 0;
    FILE *p;
    struct student1 ststudent1;
    //struct student2 ststudent2;
    p = fopen("d:\\Student_Info.txt", "rb+");
    if (p == NULL)
    {
        printf("文件打开失败!\n");
    }
    else
    {        
        while (fscanf(p, "%d %s %d %d %d %d %d %d %d %d %d %d %d %d", &ststudent1.id, ststudent1.name,
            &ststudent1.gender, &ststudent1.College, &ststudent1.data[0], &ststudent1.data[1]
            , &ststudent1.data[2], &ststudent1.data[3], &ststudent1.data[4], &ststudent1.data[5]
            , &ststudent1.data[6], &ststudent1.data[7], &ststudent1.data[8], &ststudent1.data[9]) != EOF)
        {
            student2[i].id = ststudent1.id;
            memcpy(student2[i].name, ststudent1.name, 10);
            memcpy(student2[i].data, ststudent1.data, 10 * sizeof(int));
            getGender(student2[i].gender, ststudent1.gender);
            getCollege(student2[i].College, ststudent1.College);
            student2[i].average = 0;
            for (j = 0; j < 10; j++)
            {
                student2[i].average += student2[i].data[j];
            }
            student2[i].average /= 10.0;

            i++;
        }
        fclose(p);
        printf("读取成功!\n");
    }
}

void write()
{
    int i = 0;   

    FILE *fp = fopen("d:\\result.txt", "w");
    if (fp == NULL)
    {
        printf("文件打开失败!\n");
        return;
    }
    else
    {
        fclose(fp);
        for (i = 0; i < 100; i++)
        {
            fp = fopen("d:\\result.txt", "ab+");
            if (fp == NULL)
            {
                printf("文件打开失败!\n");
                return;
            }
            else
            {
                fprintf(fp, "%d %s %s %s %d %d %d %d %d %d %d %d %d %d\n", student2[i].id, student2[i].name,
                    student2[i].gender, student2[i].College, student2[i].data[0], student2[i].data[1]
                    , student2[i].data[2], student2[i].data[3], student2[i].data[4], student2[i].data[5]
                    , student2[i].data[6], student2[i].data[7], student2[i].data[8], student2[i].data[9]);
                fclose(fp);
            }            
        }
        printf("写入成功!\n");
    }
}

void sortWithName()
{
    int i, j;
    char name[100][10] = { 0 }, temp[10] = { 0 };

    if (student2[0].id == 0)
    {
        printf("请先读取原文件!\n");
        return;
    }

    for (i = 0; i < 100; i++)
    {
        strcpy(name[i], student2[i].name);
    }
    for (i = 0; i < 100; i++)
    {
        for (j = 0; j < 99; j++)
        {
            if (strcmp(name[j], name[j+1])>0)
            {
                strcpy(temp, name[j]);
                strcpy(name[j], name[j+1]);
                strcpy(name[j+1], temp);
            }
        }
    }

    for (i = 0; i < 100; i++)
    {
        for (j = 0; j < 100; j++)
        {
            if (strcmp(name[i], student2[j].name)==0)
            {
                printf("%d\t%s\t%s\t%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f\n", student2[j].id, student2[j].name,
                    student2[j].gender, student2[j].College, student2[j].data[0], student2[j].data[1]
                    , student2[j].data[2], student2[j].data[3], student2[j].data[4], student2[j].data[5]
                    , student2[j].data[6], student2[j].data[7], student2[j].data[8], student2[j].data[9], student2[j].average);
                break;
            }
        }
    }
}

void sortWithScore()
{
    int i, j;
    float faverage[100] = {0},temp = 0;

    if (student2[0].id == 0)
    {
        printf("请先读取原文件!\n");
        return;
    }

    for (i = 0; i < 100; i++)
    {
        faverage[i] = student2[i].average;
    }
    for (i = 0; i < 100; i++)
    {
        for (j = 0; j < 99; j++)
        {
            if (faverage[j] < faverage[j + 1])
            {
                temp = faverage[j];
                faverage[j] = faverage[j + 1];
                faverage[j + 1] = temp;
            }
        }
    }

    for (i = 0; i < 100; i++)
    {
        for (j = 0; j < 100; j++)
        {
            if (faverage[i] == student2[j].average)
            {
                printf("%d\t%s\t%s\t%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f\n", student2[j].id, student2[j].name,
                    student2[j].gender, student2[j].College, student2[j].data[0], student2[j].data[1]
                    , student2[j].data[2], student2[j].data[3], student2[j].data[4], student2[j].data[5]
                    , student2[j].data[6], student2[j].data[7], student2[j].data[8], student2[j].data[9], student2[j].average);
                break;
            }
        }
    }
}

void printfCollege()
{
    int i, j, College;
    char temp[30] = { 0 };
   
    if (student2[0].id == 0)
    {
        printf("请先读取原文件!\n");
        return;
    }

    puts("\t\t*********************************************");
    puts("\t\t*******        0--信息学院               ****");
    puts("\t\t*******        1--计算机学院             ****");
    puts("\t\t*******        2--文法学院               ****");
    puts("\t\t*******        3--外国语学院             ****");
    puts("\t\t*******        4--数理学院               ****");
    puts("\t\t*******        5--会金学院               ****");
    puts("\t\t*******        6--化工学院               ****");
    puts("\t\t*******        7--商学院                 ****");
    puts("\t\t*******        8--航空学院               ****");
    puts("\t\t*******        9--艺术学院              ****");
    puts("\t\t*********************************************");
    printf("请选择学院名称(1~10): [ ]\b\b");
    scanf("%d", &College);
    switch (College)
    {
        case 1: sprintf(temp, "信息学院"); break;
        case 2: sprintf(temp, "计算机学院"); break;
        case 3: sprintf(temp, "文法学院"); break;
        case 4: sprintf(temp, "外国语学院"); break;
        case 5: sprintf(temp, "数理学院"); break;
        case 6: sprintf(temp, "会金学院"); break;
        case 7: sprintf(temp, "化工学院"); break;
        case 8: sprintf(temp, "商学院"); break;
        case 9: sprintf(temp, "航空学院"); break;
        case 10: sprintf(temp, "艺术学院"); break;
        default:printf("输入错误!"); return;
    }

    for (j = 0; j < 100; j++)
    {
        if (strcmp(temp, student2[j].College) == 0)
        {
            printf("%d\t%s\t%s\t%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f\n", student2[j].id, student2[j].name,
                student2[j].gender, student2[j].College, student2[j].data[0], student2[j].data[1]
                , student2[j].data[2], student2[j].data[3], student2[j].data[4], student2[j].data[5]
                , student2[j].data[6], student2[j].data[7], student2[j].data[8], student2[j].data[9], student2[j].average);
        }
    }
}

void modifyStudent()
{
    int i, j;
    char name[10] = { 0 };

    if (student2[0].id == 0)
    {
        printf("请先读取原文件!\n");
        return;
    }
    printf("请输入学生名字:");
    scanf("%s", name);
    for (j = 0; j < 100; j++)
    {
        if (strcmp(name, student2[j].name) == 0)
        {
            printf("请输入要修改的10门课的成绩,用空格隔开:");
            scanf("%d%d%d%d%d%d%d%d%d%d", &student2[j].data[0], &student2[j].data[1]
                , &student2[j].data[2], &student2[j].data[3], &student2[j].data[4], &student2[j].data[5]
                , &student2[j].data[6], &student2[j].data[7], &student2[j].data[8], &student2[j].data[9]);

            student2[j].average = 0;
            for (i = 0; i < 10; i++)
            {
                student2[j].average += student2[j].data[i];
            }
            student2[j].average /= 10.0;

            write();
            break;
        }
    }
    if (j == 100)
    {
        printf("找不到该学生!\n");
    }
}

void printfName()
{
    int i, j;
    char name[10] = { 0 };

    if (student2[0].id == 0)
    {
        printf("请先读取原文件!\n");
        return;
    }
    printf("请输入学生名字:");
    scanf("%s", name);
    for (j = 0; j < 100; j++)
    {
        if (strcmp(name, student2[j].name) == 0)
        {
            printf("%d\t%s\t%s\t%s\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f\n", student2[j].id, student2[j].name,
                student2[j].gender, student2[j].College, student2[j].data[0], student2[j].data[1]
                , student2[j].data[2], student2[j].data[3], student2[j].data[4], student2[j].data[5]
                , student2[j].data[6], student2[j].data[7], student2[j].data[8], student2[j].data[9], student2[j].average);
            break;
        }
    }
    if (j == 100)
    {
        printf("找不到该学生!\n");
    }
}

void modifyPassword()
{
    ;;//选做
}

void menu()       //菜单函数
{
    int n, m;
    do
    {
        puts("\t\t*********************************************");
        puts("\t\t*********************************************");
        puts("\t\t**************学生成绩系统菜单***************");
        puts("\t\t*********************************************");
        puts("\t\t*********************************************");
        puts("\t\t*******        1--原始文件读取           ****");
        puts("\t\t*******        2--按姓名排序,输出       ****");
        puts("\t\t*******        3--按平均成绩排序,输出   ****");
        puts("\t\t*******        4--输出给定学院学生       ****");
        puts("\t\t*******        5--修改给定学生成绩信息   ****");
        puts("\t\t*******        6--按姓名查询学生,输出   ****");
        puts("\t\t*******        7--修改系统密码           ****");
        puts("\t\t*******        0--返回上一级菜单         ****");
        puts("\t\t*********************************************");
        printf("请选择服务种类(0~7): [ ]\b\b");
        scanf("%d", &n);
        if (n<1 || n>8)
        {
            system("cls");
            printf("选择错误! 请重新选择!\n");
            m = 1;
        }
        else
        {
            m = 0;
        }
    } while (m == 1);
    switch (n)
    {
    case 1: read(); break;
    case 2: sortWithName(); break;
    case 3: sortWithScore(); break;
    case 4: printfCollege(); break;
    case 5: modifyStudent(); break;
    case 6: printfName(); break;
    case 7: modifyPassword(); break;
    case 0: break;
    default:printf("输入错误!"); break;
    }
}

int main()
{
    while (1)
    {
        menu();
    }
    return 0;
}
搜索更多相关主题的帖子: 管理系统 include c语言 
2016-12-19 18:12
快速回复:学生成绩管理系统 c语言算法求助!
数据加载中...
 
   



关于我们 | 广告合作 | 编程中国 | 清除Cookies | TOP | 手机版

编程中国 版权所有,并保留所有权利。
Powered by Discuz, Processed in 0.025915 second(s), 8 queries.
Copyright©2004-2024, BCCN.NET, All Rights Reserved