C语言实现学生选课系统

#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  80 typedef 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;}