C语言学生选课系统(代码).doc

.实用文档.#include<stdio.h>#include<stdlib.h>#include<string.h>intN1,N2;structstudent{intnum2;charname2[20];intnelenum[50];//所选课程编号intnelen;//所选课程学分和structstudent*next;};structcourse{intnum1;//课程编号charname1[20];charmajor[20];chartype[20];intcredit;intperiod;charteacher[20];intpeople;//选此门课程的人数structcourse*next;//结构体指针};structcourse*head1;structstudent*head2;voidzhang()//从键盘录入课程信息{structcourse*p1,*p2;N1=0;p1=p2=(structcourse*)malloc(sizeof(structcourse));printf("课程编号\t课程名称\t主修\t课程性质\t学分\t课时\t教师\n");scanf("%d%s%s%s%d%d%s",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1->teacher);p1->people=0;head1=NULL;while(p1->num1!=0){N1=N1+1;if(N1==1)head1=p1;elsep2->next=p1;p2=p1;p1=(structcourse*)malloc(sizeof(structcourse));scanf("%d%s%s%s%d%d%s",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1->teacher);p1->people=0;}p2->next=NULL;}voidzhang1()//从文件录入课程信息{FILE*fp;charfilepath[20];structcourse*p1,*p2;N1=0;printf("请输入您要读取的路径:");getchar();gets(filepath);if((fp=fopen(filepath,"r"))==NULL){printf("找不到%s文件!\n",filepath);exit(0);}p1=p2=(structcourse*)malloc(sizeof(structcourse));fscanf(fp,"%d%s%s%s%d%d%s%d",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1->teacher,&p1->people);while(!feof(fp)){N1=N1+1;if(N1==1)head1=p1;elsep2->next=p1;p2=p1;p1=(structcourse*)malloc(sizeof(structcourse));fscanf(fp,"%d%s%s%s%d%d%s%d",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1->teacher,&p1->people);}p2->next=NULL;}voidload()//录入课程信息函数{inti;printf("\t\t\t录入课程信息\n");printf("\n1.从键盘录入");printf("\n2.从文件录入");printf("\n3.返回主菜单\n");printf("请选择1-3:");scanf("%d",&i);switch(i){case1:zhang();break;case2:zhang1();break;case3:break;}}voidinsert(structcourse*incourse)//增加课程信息{structcourse*p0,*p1,*p2;p1=head1;p0=incourse;if(head1==NULL){head1=p0;p0->next=NULL;}else{while((p0->num1>p1->num1)&&(p1->next!=NULL)){p2=p1;p1=p1->next;}if(p0->num1<=p1->num1){if(head1==p1)head1=p0;elsep2->next=p0;p0->next=p1;}else{p1->next=p0;p0->next=NULL;}}N1=N1+1;}voidde