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228 lines
4.5 KiB
228 lines
4.5 KiB
#include<stdio.h>
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#include<stdlib.h>
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#include<string.h>
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typedef struct subject_info
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{
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int number;
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char name[20];
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int score;
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int time;
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int classtime;
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int exprimenttime;
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char term[10];
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} subject;
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typedef struct student_info
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{
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char xh[4];
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char name[10];
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int subject_num1;
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int subject_num2;
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} student;
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subject sub;
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student stu;
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void infoinput() //课程信息录入函数
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{
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FILE *fp;
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fp=fopen("si.txt","a+");
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if(fp==NULL)
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{
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printf("文件打开失败!\n");
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exit(0);
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}
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printf("请输入课程编号；\n");
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scanf("%d",&sub.number);
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printf("请输入课程名称；\n");
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scanf("%s",sub.name);
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printf("请输入课程学分；\n");
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scanf("%d",&sub.score);
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printf("请输入课程学时；\n");
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scanf("%d",&sub.time);
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printf("请输入授课学时；\n");
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scanf("%d",&sub.classtime);
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printf("请输入实验学时；\n");
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scanf("%d",&sub.exprimenttime);
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printf("请输入开课学期；\n");
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scanf("%s",sub.term);
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fprintf(fp,"\n%d\t%s\t%d\t%d\t%d\t%d\t%s\t\n",sub.number,sub.name,sub.score,sub.time,sub.classtime,sub.exprimenttime,sub.term);
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if(fclose(fp))
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{
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printf("无法关闭文件！\n");
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exit(0);
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}
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}
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void studentinfo() //学生选课信息录入
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{
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FILE *fp;
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fp=fopen("student.txt","a+");
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if(fp==NULL)
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{
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printf("文件打开失败!");
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exit(0);
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}
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printf("请输入学生学号：");
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scanf("%s",stu.xh);
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printf("请输入学生姓名：");
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scanf("%s",stu.name);
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printf("请输入您选的第一门课程的编号：");
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scanf("%d",&stu.subject_num1);
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printf("请输入您选的第二门课程的编号：");
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scanf("%d",&stu.subject_num2);
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fprintf(fp,"\n%s\t%s\t%d\t%d\t\n",stu.xh,stu.name,stu.subject_num1,stu.subject_num2);
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if(fclose(fp))
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{
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printf("无法关闭文件！");
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exit(0);
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}
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}
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void lookthrough() //课程信息浏览
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{
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FILE *fp;
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fp=fopen("si.txt","r");
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if(fp==NULL)
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{
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printf("文件打开失败!");
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exit(0);
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}
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rewind(fp);
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printf("选修课程信息一览表\n");
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printf("编号\t名称\t学分\t学时\t授课学时\t实验学时\t开课学期\n");
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while(!feof(fp))
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{
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fscanf(fp,"%d\t%s\t%d\t%d\t%d\t%d\t%s\t",&sub.number,sub.name,&sub.score,&sub.time,&sub.classtime,&sub.exprimenttime,sub.term);
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printf("\n%d\t%s\t%d\t%d\t%d\t %d\t %s\t\n",sub.number,sub.name,sub.score,sub.time,sub.classtime,sub.exprimenttime,sub.term);
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}
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if(fclose(fp))
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{
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printf("无法关闭文件！\n");
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exit(0);
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}
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}
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void xh_cx() //按学号查询
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{char s[4];
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char a[4]="";
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FILE *fp;
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int flag=0;
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printf("请输入查询的学号:");
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scanf("%s",s);
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fp=fopen("student.txt","r");
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if(fp==NULL)
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{
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printf("文件打开失败!");
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exit(1);
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}
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rewind(fp);
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while(!feof(fp))
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{
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fscanf(fp,"%s%s%d%d",stu.xh,stu.name,&stu.subject_num1,&stu.subject_num2);
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strncpy(a,stu.xh,4);
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if(strcmp(a,s)==0)
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{
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printf("%s\t%s\t%d\t%d\n",stu.xh,stu.name,stu.subject_num1,stu.subject_num2);
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flag=1;
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}
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}
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if(flag==0)
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printf("Not Found!\n");
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if(fclose(fp))
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{
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printf("无法关闭文件！");
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exit(0);
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}
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}
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void score_cx() //按学分查询
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{
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FILE *fp;
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int xf,a;int flag=0;
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fp=fopen("si.txt","r");
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if(fp==NULL)
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{
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printf("文件打开失败!");
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exit(1);
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}
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rewind(fp);
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printf("请输入学分：");
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scanf("%d",&xf);
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while(!feof(fp))
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{
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fscanf(fp,"%d\t%s\t%d\t%d\t%d\t%d\t%s\t",&sub.number,sub.name,&sub.score,&sub.time,&sub.classtime,&sub.exprimenttime,sub.term);
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a=sub.score;
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if(xf==a)
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{
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printf("%d\t%s\t%d\t%d\t%d\t%d\t%s\t\n",sub.number,sub.name,sub.score,sub.time,sub.classtime,sub.exprimenttime,sub.term);
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flag=1;
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}
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}
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if(flag==0)
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printf("Not Found!\n");
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if(fclose(fp))
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{
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printf("无法关闭文件！");
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exit(0);
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}
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}
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int main()
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{
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int n;
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do
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{
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printf("\n学生选课系统\n\n");
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printf("------------------\n");
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printf("| 1.课程信息录入 |\n");
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printf("| 2.选课信息录入 |\n");
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printf("| 3.课程信息浏览 |\n");
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printf("| 4.按学号查询 |\n");
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printf("| 5.按学分查询 |\n");
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printf("| 6.退出 |\n");
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printf("------------------\n\n");
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printf("请输入服务选项：");
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scanf("%d",&n);
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switch(n)
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{
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case 1:
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{
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system("cls");
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infoinput();
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break;
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}
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case 2:
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{
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system("cls");
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studentinfo();
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break;
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}
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case 3:
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{
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system("cls");
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lookthrough();
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break;
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}
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case 4:
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{
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system("cls");
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xh_cx();
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break;
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}
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case 5:
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{
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system("cls");
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score_cx();
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break;
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}
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case 6:
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{
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system("cls");
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printf("欢迎使用本系统。谢谢！");
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}
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default:break;
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}
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} while(n!=6);
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}
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