C小项目 —— 学生选课系统

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C小项目 —— 学生选课系统
#include<stdio.h>#include<windows.h>#include<stdlib.h>#include<conio.h>typedef unsigned char  uint8_t;typedef unsigned short uint16_t;typedef unsigned int   uint32_t;#define CLASS_CLS    system("cls")#define CLASS_NAME   80typedef struct class  {    char name[CLASS_NAME];  /* 课程名称 -- 唯一性 */    uint32_t nature;        /* 课程性质(必修或者选修) */    uint32_t total_period;  /* 课程总学时 */    uint32_t teach_period;  /* 授课学时 */    uint32_t exper_period;  /* 上机学时 */    uint32_t start_time;    /* 课程开始时间 */    uint8_t score;          /* 课程学分 */    uint8_t is_exsit;       /* 课程是否存在 */    struct class *next;  } class_t; // 课程结构体class_t *head = NULL;static uint32_t count = 1;void play(char *text, int display, int time, int nu) //动画打印{  CLASS_CLS;  int i, len;  for(i = 0; i <= nu; i++)  {    printf("\n");  }  for(i = 0; i < 25; i++)  {    printf(" ");  }  len = strlen(text);  for(i = 0; i < len; i++)  {    printf("%c", text[i]);    Sleep(display);  }  Sleep(time);}void titile(char *text, char *str){  CLASS_CLS;  uint8_t i;  for(i = 0; i < 25; i++)  {    printf(" ");  }  printf("%s\n", text);  for(i = 0; i <= 60; i++)  {    printf("%s", str);  }  printf("\n");}void menu(void){  titile("【学生选课系统】", "-");  printf("\n\t|-----------------------------------|");  printf("\n\t|            [1]--增加课程          |");  printf("\n\t|            [2]--浏览课程          |");  printf("\n\t|            [3]--查询课程          |");  printf("\n\t|            [4]--删除课程          |");  printf("\n\t|            [5]--修改课程          |");  printf("\n\t|            [Q]--退出系统          |");  printf("\n\t|-----------------------------------|");}void get_bat_data(void){  class_t *point, *q;  uint32_t count = 0;  FILE *fp = fopen("c:\\student_elective.dat", "rb");  rewind(fp);  point = (class_t *)malloc(sizeof(class_t));  head = point;  while(!feof(fp))  {    count++;    fread(point, sizeof(class_t), 1, fp);    point->next = (class_t *)malloc(sizeof(class_t));    q = point;    point = point->next;  }  q->next = NULL;  fclose(fp);}void save_bat_data(void){  class_t *point = head;  FILE *fp = fopen("c:\\student_elective.dat", "w+");  while(NULL != point)  {    count++;    fwrite(point, sizeof(class_t), 1, fp);    point = point->next;  }  fclose(fp);}uint32_t num_check(void){  char ch;  uint32_t sum = 0;  while(1)  {    ch = getch();    if('\n' == ch || '\r' == ch)    {      return sum;    }    else if('\b' == ch)    {      sum /= 10;      printf("\b \b");    }    else if(('0' <= ch) && ('9' >= ch))    {      sum *= 10;      sum += ch - '0';      printf("%d", ch - '0');    }  }}void create(void){  class_t *point, *q;  char tmp[CLASS_NAME], ch;  uint8_t flag = 0;  while(1)  {    if(1 != count)    {      printf("是否继续增加课程(y/n):");      gets(tmp);      if(strcmp(tmp, "n") == 0)      {        break;      }    }    point = (class_t *)malloc(sizeof(class_t));    point->is_exsit = 0;    printf("\n====请输入第%d个选修课程信息====\n", count);    printf("选择课程名称：");    gets(point->name);    q = head;    while(NULL != q)    {      if(strcmp(q->name, point->name) == 0)      {        flag = 1;        printf("课程名称重复或者不合格，请重新输入...\n");        break;      }      q = q->next;    }    if(1 == flag)    {      continue;    }    printf("课程性质:");    printf("\n[B]--【必修】 [X]--【选修】");    while(1)    {      ch = getch();      if(ch == 'b' || ch == 'B')      {        point->nature = 1;        break;      }      if(ch == 'x' || ch == 'X')      {        point->nature = 2;        break;      }    }    printf("\n输入总学时：(只接受数字！)");    point->total_period = num_check();    printf("\n输入授课学时：(只接受数字！)");    point->teach_period = num_check();    printf("\n输入上机学时：(只接受数字！)");    point->exper_period = num_check();    printf("\n输入本课程学分：(只接受数字！)");    point->score = num_check();    printf("\n输入开课学期：(只接受数字！)");    point->start_time = num_check();    point->is_exsit = 1;    point->next = head;    head = point;    count++;      }    printf("信息录入完毕，按任意键继续……");  getch();}void display(void){  class_t *point = head;  CLASS_CLS;  titile("【查看课程】", "-");  printf("\n名称           \t性质\t总学时\t授课学时\t上机学时\t学分\t开课学期");  while(NULL != point)  {    if(1 == point->is_exsit)    {      printf("\n%-14s    ", point->name);      if(1 == point->nature)      {        printf("必修课");      }      else      {        printf("选修课");      }      printf("      %d时     %d时            %d时           %d分      %d时", point->total_period, point->teach_period, point->exper_period, point->score, point->start_time);    }    point = point->next;  }  getch();}// 对照学生管理系统自行拓展void search(void){}void modify(void){}void delete(void){}int main(void){  uint8_t value;  uint8_t movie = 1;  char choice[3];  FILE *fp = fopen("c:\\student_elective.dat", "a");  fclose(fp);  system("color 30");  system("mode con:cols=100 lines=35");  system("title 【选修课系统】");  if(1 == movie)  {    play("欢迎使用【选修课系统】", 80, 1500, 10);  }  while(1)  {    CLASS_CLS;    menu();    do    {      gets(choice);      value = atoi(choice);    }    while((value > 12) || (value < 0));    switch(value)    {    case 1:      create();      break;    case 2:      display();      break;    case 3:      search();      break;    case 4:      modify();      break;    case 5:      delete();      break;    case 6:      save_bat_data();      break;    case 7:      get_bat_data();      break;    case 8:      exit(1);      break;    default:      break;    }  }  return 0;}
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