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void search()//课程信息查询
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{
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int mai_n();
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FILE *fp;
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struct course c;
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int xuefen,time;
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char kind[10];
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int a,b;
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printf("1.按学分查询./ /2.按课程性质查询./ /3.按开课学期查询\n");
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printf("请选择查询方式，输入选项数字： ");
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scanf("%d",&b);
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if(b==1)
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{
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printf("\n 请输入要查询的学分:\n");
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scanf("%d",&xuefen);
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if((fp=fopen("course.txt","r"))==NULL)
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{
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printf("\nCannot open course!\n");
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}
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printf("课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期:\n");
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for(;!feof(fp);)//文件到结尾前运行
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{fscanf(fp,"%d%s%s%d%d%d%d%d\n",&c.num,&c.name,&c.kind,&c.time,&c.ttime,&c.etime,&c.mark,&c.term);
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if(c.mark==xuefen)
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printf("%5d%12s%9s%9d%9d%11d%11d%11d\n",c.num,c.name,c.kind,c.time,c.ttime,c.etime,c.mark,c.term);
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}
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}
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else if(b==2){
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printf("\n 请输入要查询的课程性质:\n");
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scanf("%s",&kind);
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if((fp=fopen("course.txt","r"))==NULL)
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{
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printf("\nCannot open course!\n");
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}
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printf("课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期:\n");
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for(;!feof(fp);)
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{
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fscanf(fp,"%d%s%s%d%d%d%d%d\n",&c.num,&c.name,&c.kind,&c.time,&c.ttime,&c.etime,&c.mark,&c.term);
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if(strcmp(c.kind,kind)==0)
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printf("%5d%12s%9s%9d%9d%11d%11d%11d\n",c.num,c.name,c.kind,c.time,c.ttime,c.etime,c.mark,c.term);
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}
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}
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else if(b==3){
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printf("\n 请输入要查询的课程开课学期；\n");
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scanf("%d",&time);
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if((fp=fopen("course.txt","r"))==NULL)
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{
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printf("\nCannot open course!\n");
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}
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printf("课程编号 课程名称 课程性质 总学时 授课学时 实验或上机学时 学分 开课学期:\n");
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for(;!feof(fp);)
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{fscanf(fp,"%d%s%s%d%d%d%d%d\n",&c.num,&c.name,&c.kind,&c.time,&c.ttime,&c.etime,&c.mark,&c.term);
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if(c.term==time)
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printf("%5d%12s%9s%9d%9d%11d%11d%11d\n",c.num,c.name,c.kind,c.time,c.ttime,c.etime,c.mark,c.term);
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}
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}
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else{
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printf("输入错误！");
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exit(1);
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}
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fclose(fp);
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printf("\n1-返回菜单；2-退出系统\n");
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scanf("%d",&a);system("cls");//清屏
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if(a==1)
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mai_n();
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else
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exit(0);
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}
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