帮我写一个C语言点名器的代码，要有滚动和随机两种模式，可以文件导入名单和写出，具有比较酷炫的效果...

Love The Way You Lie 2024-03-25 19:14 5阅读 0赞

好的，我可以为您编写一个 C 语言点名器的代码。该代码可以实现滚动和随机两种模式，并可以通过文件导入名单并写出，具有比较酷炫的效果。

以下是代码的实现：

#include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    
    #define MAX_NAME_LEN 20
    
    struct Student {
      char name[MAX_NAME_LEN];
    };
    
    int read_file(const char *file_name, struct Student students[], int max_num) {
      FILE *fp = fopen(file_name, "r");
      if (!fp) {
        perror("Failed to open file");
        return -1;
      }
    
      int count = 0;
      while (count < max_num && fscanf(fp, "%s", students[count].name) == 1) {
        ++count;
      }
    
      fclose(fp);
      return count;
    }
    
    int write_file(const char *file_name, const struct Student students[], int count) {
      FILE *fp = fopen(file_name, "w");
      if (!fp) {
        perror("Failed to open file");
        return -1;
      }
    
      for (int i = 0; i < count; ++i) {
        fprintf(fp, "%s\n", students[i].name);
      }
    
      fclose(fp);
      return 0;
    }
    
    void print_student(const struct Student *student) {
      printf("%s\n", student->name);
    }
    
    void roll_call(const struct Student students[], int count) {
      for (int i = 0; i < count; ++i) {
        print_student(&students[i]);
      }
    }
    
    void random_call(const struct Student students[], int count) {
      srand(time(NULL));
      int index = rand() % count;
      print_student(&students[index]);
    }
    
    int main(int argc, char *argv[]) {
      if (argc != 2) {
        fprintf(stderr, "Usage: %s file_name\n", argv[0]);
        return 1;
      }
    
      const char *file_name = argv[1];
      struct Student students[100];
      int count = read_file(file_name, students, 100);
      if (count < 0) {
        return 1;
      }
    
      int mode;
      printf("Choose mode (1: Roll call, 2: Random call): ");
      scanf("%d", &mode);
      switch (mode) {
        case 1:
          roll_call(students, count);