C语言实现学生选课系统

#include <stdio.h>#include <stdlib.h>#include <malloc.h>#include <string.h> typedef struct curr{char name[20];  //课程姓名 int number; //课程序号   char teacher[20]; //课程教师姓名 int time; //课程课时 int classroom; //课程教室 struct curr *next; //链表next }curr,*pcurr;typedef struct stu{int number; //学生序号 char name[20]; //学生姓名 char sex[20]; //学生性别 struct curr *choices; //学生选课 struct stu *next; //链表next }stu,*pstu;pcurr creat_curr(pcurr curr_head);  //创建链表，课程信息 pcurr find_curr(pcurr curr_head,int number);  //查找链表， 课程信息 pcurr add_curr(pcurr curr_head,pcurr new_curr); //课程信息加入链表 void out_curr(pcurr curr_head); //输出课程信息 pcurr del_curr(pcurr curr_head,pcurr del_point); //删除课程信息 pstu creat_stu(pstu stu_head); //创建链表，学生信息 pstu find_stu(pstu stu_head,int number); //查找链表， 学生信息 pstu add_stu(pstu stu_head,pstu new_stu); //学生信息，加入链表void out_stu(pstu stu_head); //输出学生信息 pstu del_stu(pstu stu_head,pstu del_point); //删除学生信息pstu choice_curr(pstu stu_head,int number1,pcurr curr_head); //学生选课信息 void out_choice(pstu stu_head); //输出学生选课信息 void title(){printf("/t---------欢迎使用成都信息工程大学--学生选课系统------------/n");printf("/t---------          ------------/n");printf("/t---------   1.输入课程信息   ------------/n");printf("/t---------   2.浏览课程信息   ------------/n");printf("/t---------   3.删除课程信息   ------------/n");printf("/t---------   4.输入学生信息   ------------/n");printf("/t---------   5.浏览学生信息   ------------/n");printf("/t---------   6.删除学生信息   ------------/n");printf("/t---------    7.学生选课    ------------/n");printf("/t---------   8.所有学生选课信息   ------------/n");printf("/t---------    9.退出程序    ------------/n");printf("/t---------          ------------/n");printf("/t--------- 特别鸣谢：网络工程专业刘尚文同学 ------------/n");}int main(){int a,n=0,i;int number=0;int number1=0;pcurr curr_head=NULL;pstu stu_head=NULL;pcurr new_curr=NULL;pstu new_stu=NULL;pcurr del_point=NULL;char choice[20];do{system("cls");title();printf("请在1-9中选择:");scanf("%d",&a);switch(a){case 1: system("cls");new_curr=creat_curr(curr_head);curr_head=add_curr(curr_head,new_curr);break;case 2:system("cls");printf("/t/t---------   全部课程信息   ------------/n");printf("/t课程姓名/t课程序号/t课程教师姓名/t课程课时/t课程教室/n");out_curr(curr_head);system("pause"); break;case 3:system("cls");printf("/t课程姓名/t课程序号/t课程教师姓名/t课程课时/t课程教室/n");out_curr(curr_head); printf("请输入打算删除的课程的序号:/n");scanf("%d",&number);curr_head=del_curr(curr_head,find_curr(curr_head,number));printf("删除成功！/n");system("pause");break;case 4:system("cls");new_stu=creat_stu(stu_head);stu_head=add_stu(stu_head,new_stu);break;case 5:system("cls");printf("/t/t---------   全部学生信息   ------------/n");printf("/t学生姓名/t学生学号/t学生性别/n");out_stu(stu_head);system("pause"); break;case 6:system("cls");printf("请输入打算删除的学生的学号:/n");scanf("%d",&number);stu_head=del_stu(stu_head,find_stu(stu_head,number));printf("删除成功！/n");system("pause");break;case 7:system("cls");printf("/t学生姓名/t学生学号/t学生性别/n");out_stu(stu_head);printf("请输入选课同学学号:");scanf("%d",&number1);choice_curr(stu_head,number1,curr_head);system("pause");break;;case 8:system("cls");printf("/t/t/t/t---------   全部选课信息   ------------/n");printf("/n");printf("/t学生姓名/t学生学号/t学生性别/t课程姓名/t课程序号/t课程教师姓名/t课程课时/t课程教室/n");out_choice(stu_head);system("pause"); break;case 9:return 0;break;}} while(a!=0);return 0;}//创建链表，课程信息 pcurr creat_curr(pcurr curr_head){pcurr new_curr=(pcurr)malloc(sizeof(curr));printf("/n");printf("/t/t---------   输入课程信息   ------------/n");printf("/n");printf("请输入课程姓名：");scanf("%s",new_curr->name);printf("请输入课程序号：");scanf("%d",&new_curr->number);printf("请输入课程教师姓名：");scanf("%s",new_curr->teacher);printf("请输入课程课时：");scanf("%d",&new_curr->time);printf("请输入课程教室：");scanf("%d",&new_curr->classroom);while (find_curr(curr_head,new_curr->number)!=NULL){printf("此序号已经有数据，请重新输入.");scanf("%d",&new_curr->number);}new_curr->next=NULL;return new_curr;}//查找链表 pcurr find_curr(pcurr curr_head,int number){if(curr_head==NULL)return NULL;if(curr_head->number==number)return curr_head;return find_curr(curr_head->next, number); }//课程信息加入链表 pcurr add_curr(pcurr curr_head,pcurr new_curr){if(curr_head==NULL)return new_curr;new_curr->next=curr_head;return new_curr;}//输出课程信息 void out_curr(pcurr curr_head){while(curr_head){printf("/t%s/t/t%d/t/t%s/t/t%d/t/t%d/n",curr_head->name,curr_head->number,curr_head->teacher,curr_head->time,curr_head->classroom);curr_head=curr_head->next;}}//删除课程信息  pcurr del_curr(pcurr curr_head,pcurr del_point){pcurr point;if(del_point == NULL){printf("没有此序号信息，请重新输入!/n");return curr_head;}point=NULL;if(del_point == curr_head ){point=curr_head->next;free(curr_head);return point;}point=curr_head;while(point){if(point->next == del_point){point->next=del_point->next;free(del_point);return curr_head;}point = point->next;}} //创建链表，学生信息 pstu creat_stu(pstu stu_head){pstu new_stu=(pstu)malloc(sizeof(stu));printf("/n");printf("/t/t---------   输入学生信息   ------------/n");printf("/n");printf("请输入学生姓名：");scanf("%s",new_stu->name);printf("请输入学生学号：");scanf("%d",&new_stu->number);printf("请输入学生性别：");scanf("%s",new_stu->sex);while (find_stu(stu_head,new_stu->number)!=NULL){printf("此学号已经有数据，请重新输入.");scanf("%d",&new_stu->number);}new_stu->choices=NULL;new_stu->next=NULL;return new_stu;}//查找链表 pstu find_stu(pstu stu_head,int number){if(stu_head==NULL)return NULL;if(stu_head->number==number)return stu_head;return find_stu(stu_head->next, number); }//学生信息加入链表 pstu add_stu(pstu stu_head,pstu new_stu){if(stu_head==NULL)return new_stu;new_stu->next=stu_head;return new_stu;}//输出学生信息 void out_stu(pstu stu_head){while(stu_head){printf("/t%s/t/t%d/t/t%s/n",stu_head->name,stu_head->number,stu_head->sex);stu_head=stu_head->next;}}//删除学生信息 pstu del_stu(pstu stu_head,pstu del_point){pstu point;if(del_point == NULL){printf("没有此学号信息，请重新输入!/n");return stu_head;}point=NULL;if(del_point == stu_head ){point=stu_head->next;free(stu_head);return point;}point=stu_head;while(point){if(point->next == del_point){point->next=del_point->next;free(del_point);return stu_head;}point = point->next;}}//学生选课 pstu choice_curr(pstu stu_head,int number1,pcurr curr_head){int number;pcurr point=NULL,point1=NULL;pcurr choice_point=NULL;pstu stu_point=find_stu(stu_head,number1);if(stu_point!=NULL){printf("/t课程姓名/t课程序号/t课程教师姓名/t课程课时/t课程教室/n");out_curr(curr_head);printf("请输入所选课程学号：");scanf("%d",&number);point=find_curr(curr_head,number);if(point!=NULL){choice_point=(pcurr)malloc(sizeof(curr));memcpy(choice_point,point,sizeof(curr));choice_point->next=NULL;if(stu_point->choices==NULL){stu_point->choices=choice_point;}else {choice_point->next=stu_point->choices;stu_point->choices=choice_point;}printf("恭喜你！选课成功！/n");return stu_head;}else{printf("没有所选课程序号！");return stu_head;}}else{printf("没有所选学生学号！");return stu_head;}}//输出学生选课信息 void out_choice(pstu stu_head){pcurr point=NULL;while(stu_head){point=stu_head->choices;printf("/t%s/t/t%d/t/t%s/n",stu_head->name,stu_head->number,stu_head->sex);while(point){printf("/t/t/t/t/t/t/t%s/t/t%d/t/t%s/t/t%d/t/t%d/n",point->name,point->number,point->teacher,point->time,point->classroom);point=point->next;}stu_head=stu_head->next;}}