[C++知识库]基于C语言的随机点名器设计

基于C语言的随机点名器设计

项目描述
使用C语言，制作一个在命令行运行的点名程序，该程序运行时可指定班级的花名册文件，运行后在界面上显示随机抽取名字的过程，速度由快到慢，逐渐定格到某一个“幸运儿”上，程序结束。
项目实现：

主函数模块：main.c

#include <stdio.h>
#include "function.h"

int main(int argc, char *argv[])
{
    function();
    return 0;
}

功能模块：function.c

#include "function.h"
#include "Random_name.h"
#include "Init_list.h"
void menu()
{
    printf("  *************************************************\n");
    printf("  *                   随机点名器                   *\n");
    printf("  ************************************************ \n");
    printf("  ********************************制作人：邢仕冲****\n");
    printf("   ----------------------   ---------------------  \n");
    printf("   *********************************************  \n");
    printf("   * 1.单人抽取          * *      2.查找剩余人数   * \n");
    printf("   **********************  *********************  \n");
    printf("   * 3.文本初始化         *       4. 多人抽取     * \n");
    printf("   ********************************************** \n");
    printf("   *                 5.退出系统                  * \n");
    printf("   ********************************************** \n");
    printf("   --------------------     ----------------------\n");
}
void function()
{
    int num; //班级人数
    int new_num;
    int Init_num;
    int temp; //临时变量
    int flag = 0, flag1 = 0, flag2 = 0, flag3 = 0;
    int mulit_num;
    int lucky_num;
    char Class_txt[32];      //班级编号文档
    char Class_txt_Init[32]; //班级名单初始化文档
    printf("输入班级编号文档：");
    scanf("%s", Class_txt);
    printf("输入班级名单初始化文档：");
    scanf("%s", Class_txt_Init);
    printf("输入班级的人数：");
    scanf("%d", &num);
    menu();
    Init_num = num;
    mulit_num = num;
    new_num = num;
    while (1)
    {
        int n;
        scanf("%d", &n);
        switch (n)
        {
        case 1:
        {
            if (flag2 == 1)
            {
                num = mulit_num;
                flag2 = 0;
            }
            Random_name(num, Class_txt);
            num--;
            temp--;
            flag = 0;
            flag1 = 0;
            if (num == 0)
            {
                printf("已抽取完成！\n");
            }
            break;
        }
        case 2:
        {
            if (flag == 0)
            {
                printf("剩余人数：%d\n", num);
                if (num == 0)
                    printf("已抽取完，请输入3，使文本初始化\n");
            }
            else if (flag == 1) //初始化剩余人数
            {
                if (flag1 == 1)
                    temp = Init_num;
                printf("剩余人数：%d\n", temp);
                if (temp == 0)
                    printf("已抽取完，请输入3，使文本初始化");
            }
            else if (flag == 2)
            {
                printf("剩余人数：%d\n", mulit_num);
            }
            break;
        }
        case 3:
        {
            Init_list(Init_num, Class_txt_Init, Class_txt);
            printf("文本初始化成功！\n");
            flag = 1;
            flag1 = 1;
            flag3 = 1; //初始化完后再多人抽取
            num = Init_num;
            temp = Init_num;
            break;
        }
        case 4:
        {
            printf("输入所要抽取的人数：");
            scanf("%d", &lucky_num);
            if (flag3 == 1)
            {
                new_num = Init_num; //初始化完后需要让new_num初始化值
                flag3 = 0;
            }
            for (int i = 0; i < lucky_num; i++)
            {
                Random_name(new_num, Class_txt);
                new_num--;
            }
            flag = 2;
            mulit_num = mulit_num - lucky_num; //查找剩余人数
            /*if(mulit_num > num)
                printf("文档中人数不足所要抽取的人数");*/
            flag2 = 1;
            break;
        }
        case 5:
            Init_list(Init_num, Class_txt_Init, Class_txt);
            break;
        default:
            Init_list(Init_num, Class_txt_Init, Class_txt);
            break;
        }
        if (n > 4)
            break;
    }
}

function.h

#ifndef _FUNCTION_H
#define _FUNCTION_H

#include <stdio.h>
void function();
void menu();

#endif

随机点名实现模块 Random_name.c

#include "Random_name.h"
void Random_name(int Num, char *list)
{
    char buf[Num][SIZE];
    char buf_new[Num][SIZE];
    int n, flag;
    //1.打开list文件
    FILE *fp_list = fopen(list, "r");
    if (NULL == fp_list)
    {
        perror("fopen failed!");
        return;
    }
    srand((unsigned)time(NULL));
    //printf("%d\n", Num);
    //把文件中的数据保存到buf数组中
    for (int i = 0; i <= Num; i++)
    {
        fgets(buf[i], SIZE, fp_list);
        //去除回车
        if (*(buf[i] + (strlen(buf[i]) - 1)) == '\n')
        {
            *(buf[i] + (strlen(buf[i]) - 1)) = '\0';
        }
    }

#if 0
    for(int i = 0; i<Num; i++)
    {
        printf("%s\n", buf[i]);
    }
#endif

    /*********  循环显示姓名    **************/
    for (int j = 3000; j > 0; j -= 30)
    {
        n = 0 + rand() % Num;
        printf("%s\r", buf[n]);
        usleep(j);
    }

    for (int j = 500000; j > 0; j -= 50000)
    {
        n = 0 + rand() % Num;
        printf("%s\r", buf[n]);
        usleep(j);
    }

    printf("幸运儿：%s\n", buf[n]);
    /*************  抽取完成去掉幸运儿    *************/
    for (int i = 0; i < Num; i++)
    {
        if (strcmp(buf[n], buf[i]) == 0) //把幸运儿提取出来
        {
            strcpy(buf[i], "");
            flag = n;
        }
        strcpy(buf_new[i], buf[i]); //数组中数据保存到新数组中
    }
#if 0
    for(int i = 0; i<Num; i++)
    {
        printf("%s\n", buf_new[i]);
    }
#endif
    fclose(fp_list);
    /*********      清空list文件并把去除幸运儿后的最终名单保存到list文件中     ************/
    FILE *fp_list_new = fopen(list, "w");
    if (NULL == fp_list_new)
    {
        perror("fopen failed!");
        return;
    }
    for (int j = 0; j < Num; j++)
    {
        fputs(buf_new[j], fp_list_new);
        if (flag == j)
        {
            fputs(buf_new[j + 1], fp_list_new);
            j = j + 1;
        }
        fputs("\n", fp_list_new);
    }

   
    fclose(fp_list_new);
}

Random_name.h

#ifndef _RANDOM_NAME_H_
#define _RANDOM_NAME_H_

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#define SIZE 8

void Random_name(int Num, char *list);

#endif

初始化模块：Init_list.c

```c
#include "Init_List.h"

//初始化list文件

void Init_list(int count, char *Init_list, char *list)
{
    char Init[count][SIZE];
    FILE *fp_list_Init = fopen(Init_list, "r");
    for (int i = 0; i < count; i++)
    {
        fgets(Init[i], SIZE, fp_list_Init);
    }
    fclose(fp_list_Init);

    FILE *list_Init = fopen(list, "w");
    for (int j = 0; j < count; j++)
    {
        fputs(Init[j], fp_list_Init);
    }
    fclose(list_Init);
}

Init_list.h

#ifndef _INIT_LIST_H
#define _INIT_LIST_H
#include <stdio.h>
#include <stdlib.h>
#define SIZE 8

void Init_list(int count, char *Init_list, char *list);
#endif