程序流程图

1、creat( );//创建链表

airticket *ps ps->num!=0 head=NULL head=ps pEnd->next=ps pEnd=ps pEnd->next=NULL 2、save( );//保存文档

(fp=fopen(“1.txt”) return; head1 fwrite(head1,sizeof(airticket,1,fp); head1=head->next fclose(fp);

3、tuipiao( );//退票

airticket*tail,*temp=newairtic(fp=fopen(“1.txt”,“b”) cout<<“出错，检查文件是否存在 （fread(temp,sizeoof head=NULL head=tail=temp;head->next temp->next=NULL: temp=newairticket; fclose(fp); !head cout<<“数据为空”<airticket*tail,*temp=newairtickfp=fopen(“1.txt”) cout<<“出错，请检查文件是否存在 (fread(temp,sizeof(s head=NULL head=tail=temp;head->next temp->next=NULL; cout<5、search_num( );//按航班号查询

int num; Fp(fopen(“1.txt”) cout<<“出错，检查文件是（fread(temp,sizeof head=NULL head=tail=temp;head->next temp=newairticket; Temp->next=NULL; cout<<“请输入查找的信息” IF head IF head=head->next deletetail,temp IF

6、search_day( );//按日期查询

int day,m; (fp=fopen(“1.txt” cout<<“出错，检查文件是否存（fread(tmep,sizeo IF tmep=newairticket; cout<<“请输入所要查找的信 IF head IF head=head->next;

deletd tail,tmep IF 7、change( );//修改航班信息

int num; (fp=fopen(„1.txt”) cout<<“出错,请检查文件是否存cout<<“请输入所要修改的航班信息” (fread(&teme,sizeof() i++ temp.num=num cout<<“修改后的相应信息”<int i=1; i cout<=0&&i<=5 i=1; dingpiao( );break i=2 tuipiao( ),breaki=3 watch( );break; IF cout<int j=1; i cout<<“输出主界面” j>=1&&j<=2 i=1 cout<<“按错键，请重新选Charf[ ]=“2005”; IF IF ;break;