modified queue program

    #include<iostream.h>
    #include<conio.h>
    #include<stdio.h>
    #include<process.h>
    struct emp
    { int eno;
      char ename[15];
       emp *link;

    };
    emp *front=NULL;
    emp *rear=NULL;
    emp *temp=NULL;
    void insert()
    {
      emp *temp=new emp;
      cout<<"enter element\n";
      cin>>temp->eno;
      cout<<"enter employee name\n";
      gets(temp->ename);
      temp->link=NULL;
      if (front==NULL)
      {
     front=temp;
     rear=temp;
      }
      else
       {    rear->link=temp;
        rear=temp;
       };
    }
    void display()
    { temp=front;
      while(temp!=NULL)
    {
      cout<<temp->eno<<"\n";
      cout<<temp->ename<<"\n";
      temp=temp->link;
    }
     }
    void main()
    {
    clrscr();
    int ch;
    while(1)
    {
    cout<<"enter choice:\n 1.insert\n 2.display\n 3.exit";
    cin>>ch;
    switch (ch)
    {
     case 1:
    insert();
      break;

     case 2:
    display();
     break;

     case 3:
     exit(0);
     }
    }
    getch();
    }