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#include<stdio.h>
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#include<stdlib.h>
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#include<string.h>
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void menu();//定义系统菜单界面函数
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void teacher_login();//老师登陆界面函数
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void student_login();//学生登陆界面函数
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void login();//登陆学生选课系统总界面
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void out();//退出系统
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void search();//课程查询
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void look();//课程浏览
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void select();//课程挑选
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void put_course();//由老师首先输入课程的信息
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struct course
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{
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int course_num;//课程编号
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char course_name[10];//课程名字
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char course_sore[10];//网上授课或教室授课
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int course_score;//课程学分
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int course_classtime;//授课学时
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int course_programtime;//实验学时
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int course_count;//课程已报人数
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};
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void out()
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{
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exit(0);
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}//退出系统函数
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void menu()//学生选课系统总界面
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{
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printf("********************************\n");
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printf("欢迎来到湖南工业大学学生选课系统\n");
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printf("********************************\n");
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printf("按任意键进行\n");
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getchar();
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}
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void login()//登陆界面
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{
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void teacher_login();
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void student_login();
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int q;
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do
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{
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printf("学生登陆请按:1\n");
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printf("老师登陆请按:2\n");
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printf("退出系统请按:3\n");
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scanf("%d",&q);
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if(q!=1&&q!=2&&q!=3)
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{
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printf("输入错误\n");
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printf("请按任意键进行\n");
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getchar();
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getchar();
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}
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if(q==3)
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out();//退出系统
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switch(q)
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{
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case 1:student_login();break;
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case 2:teacher_login();break;
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}
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}while(q!=1&&q!=2&&q!=3);
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}
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void teacher_login()//老师
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{
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void search();
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void look();
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int e;
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do
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{
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printf("课程查询请按：1\n");
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printf("课程浏览请按：2\n");
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printf("课程信息输入：3\n");
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printf("退出请按：4\n");
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scanf("%d",&e);
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if(e!=1&&e!=2&&e!=3&&e!=4)
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{
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printf("输入错误\n");
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printf("请按任意进行\n");
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getchar();
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}
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else if(e==4)
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out ();
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else if(e==1||e==2)
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{
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switch(e)
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{
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case 1:search();break;
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case 2:look();break;
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}
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}
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else if(e==3)
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put_course();
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}while(e!=1&&e!=2&&e!=3&&e!=4);
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}
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void student_login()//学生
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{
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void out();
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void search();
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void look();
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void select();
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int w;
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do
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{
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printf("课程挑选请按：1\n");
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printf("课程浏览请按：2\n");
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printf("课程查询请按：3\n");
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printf("退出请按：4\n");
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scanf("%d",&w);
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if(w!=1&&w!=2&&w!=3&&w!=4)
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{
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printf("输入数据错误\n");
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printf("请按任意键进行\n");
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getchar();
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getchar();
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}
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if(w==4)
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exit(0);
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switch(w)
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{
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case 1:select();break;
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case 2:look();break;
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case 3:search();break;
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case 4:out();break;
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}
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}while(w!=1&&w!=2&&w!=3&&w!=4);
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}
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void select()//学生选课函数
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{
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FILE *fp1;//储存课程的文件
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int i=0,temp=0,n,j,r,t,y;
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struct course courses[5];
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if((fp1=fopen("course.txt","rb"))==NULL)//把存储课程的文件首地址赋给文件指针fp1
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{
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printf("文件打开错误\n");
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printf("按任意键返回\n");
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getchar();
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getchar();
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student_login();
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}
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do
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{
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fread(&courses[i],sizeof(struct course),1,fp1);//把文件的数据读到结构体中储存起来
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i+=1;
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}while(!feof(fp1));
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fclose(fp1);
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printf("输入你选择的课程编号:限1,2,3,4,5\n");//请输入1,2,3,4,5；
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scanf("%d",&n);
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for(j=0;j<5;j++)
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if(n==courses[j].course_num)
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{
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temp+=1;
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t=j;
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break;
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}
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if(temp==0)
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{
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printf("不存在输入课程号对应的课程\n");
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printf("如果继续进行请按1 返回请按2 \n");
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scanf("%d",&r);
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switch(r)
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{
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case 1:select();break;
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case 2:student_login();break;
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default:printf("输入错误，结束程序\n");exit(0);
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}
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}
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else
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{
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courses[t].course_count+=1;//进行学生选课的人数统计
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printf("选课成功，请注意通知，按时参加课程！\n");
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getchar();
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getchar();
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}
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fp1=fopen("course.txt","wb");
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for(y=0;y<5;y++)
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{
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fwrite(&courses[y],sizeof(struct course),1,fp1);//把学生选课情况录到文件中
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}
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fclose(fp1);
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}
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void look()//课程浏览函数 ,输出各个课程的信息
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{
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struct course courses[5];
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FILE *fp2;
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int i=0,j;
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if((fp2=fopen("course.txt","rb"))==NULL)
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{
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printf("文件打开错误\n");
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printf("按任意键进行\n");
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getchar();
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exit(0);
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}
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do
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{
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fread(&courses[i],sizeof(struct course),1,fp2);
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i+=1;
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}while(!feof(fp2));
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for(j=0;j<5;j++)
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{
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printf("课程编号：%d\n",courses[j].course_num);
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printf("课程名字：%s\n",courses[j].course_name);
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printf("课程类型：%s\n",courses[j].course_sore);
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printf("课程学分：%d\n",courses[j].course_score);
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printf("授课学时：%d\n",courses[j].course_classtime);
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printf("实验学时：%d\n",courses[j].course_programtime);
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printf("课程已报人数：%d\n\n",courses[j].course_count);
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}
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fclose(fp2);
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getchar();
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getchar();
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}
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void search()//课程查询函数
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{
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FILE *fp3;
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int num;
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struct course courses[5];
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int i=0,j;
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printf("请输入需要查询的课程的编号:限1,2,3,4,5\n");//请输入1,2,3,4,5；
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scanf("%d",&num);
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if(num!=1&&num!=2&&num!=3&&num!=4&&num!=5)
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{
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printf("输入错误！按任意键返回\n");
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getchar();
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getchar();
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search();
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}
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if((fp3=fopen("course.txt","rb"))==NULL)
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{
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printf("文件打开错误\n");
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printf("按任意键进行\n");
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getchar();
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exit(0);
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}
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do
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{
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fread(&courses[i],sizeof(struct course),1,fp3);
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i+=1;
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}while(!feof(fp3));
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fclose(fp3);
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for(j=0;j<5;j++)
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if(courses[j].course_num==num)
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{
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printf("课程编号：%d\n",courses[j].course_num);
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printf("课程名字：%s\n",courses[j].course_name);
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printf("课程类型：%s\n",courses[j].course_sore);
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printf("课程学分：%d\n",courses[j].course_score);
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printf("授课学时：%d\n",courses[j].course_classtime);
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printf("实验学时：%d\n",courses[j].course_programtime);
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printf("课程已报人数：%d\n",courses[j].course_count);
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break;
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}
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getchar();
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getchar();
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}
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void put_course()
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{
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FILE *fp;
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struct course courses[5];
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printf("老师向数据库文件输入五组课程数据。例如： \n");
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printf("1 体适能 教室授课 5 30 3 0\n");
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printf("2 英语 网上授课 5 30 5 0\n");
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printf("3 湖南青马 网上授课 5 30 5 0\n");
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printf("4 心理学 网上授课 5 30 5 0\n");
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printf("5 心理健康 教室授课 5 30 5 0\n");
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printf("有五次输入，注意每个成员间用空格隔开，刚输入时把已报人数设为0，输入一个结构体数组按回车键\n");
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printf("数据依次代表：编号，名字，方式，学分，授课学时，实验学时，已报人数\n");
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printf("老师测试时为节省时间可以把上面5组数据样例复制作为输入，在进行其他测试\n");
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int j;
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for(j=0;j<5;j++)
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{
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scanf("%d%s%s%d%d%d%d",&courses[j].course_num,courses[j].course_name,courses[j].course_sore,&courses[j].course_score,&courses[j].course_classtime,&courses[j].course_programtime,&courses[j].course_count);
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}
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int i;
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if((fp=fopen("course.txt","wb"))==NULL)
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{
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printf("文件打开错误\n");
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printf("按任意键进行\n");
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getchar();
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exit(0);
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}
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for(i=0;i<5;i++)
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{
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fwrite(&courses[i],sizeof(struct course),1,fp);
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}
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fclose(fp);
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printf("课程信息输入成功\n");
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getchar();
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getchar();
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}
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int main()//主函数
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{
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menu();
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printf("老师首次登陆时，点击老师选项，应输入课程信息,学生禁止点击\n");
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login();
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return 0;
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}
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吴孔炎
6 years ago