Linked List Insert Operation in C++

Program for Insert element in Linked List using C++ language. Linked list has the dynamic memory allocation,thats why we can add n number of node in link list at our desire location.Simply use of three insertion operation done in this linked list program
1.Insert at beg                         2.Insert at end
3.Insert at specific location

Source Code:-

#include<iostream.h>
#include<conio.h>
#include<malloc.h>
struct node
{int info;
struct node *next;
}*start, *temp;

void insert_beg(int);
void insert_end(int);
void insert_spe(int,int);
void display();

void main()
{clrscr();
 start=NULL;
 int item,choice,location,element,position;
 cout<<endl<<"Insert Element in Link List by-Tarun Rawat\n";
 again:
 cout<<"\n1.Insert at Beg of the linked list .\n";
 cout<<"2.Insert at End of the linked list\n";
 cout<<"3.Insert at specific location\n4.Display Linked list\n5.Exit Program\n";
 cout<<"Enter Choice : ";
 cin>>choice;
 switch(choice)
 {case 1:cout<<"Enter item to insert : ";
cin>>item;
insert_beg(item);
goto again;
 case 2:cout<<"Enter item to insert : ";
cin>>item;
insert_end(item);
goto again;
 case 3:cout<<"Enter location to insert : ";
cin>>location;
cout<<"Enter item to insert : ";
cin>>item;
insert_spe(item,location);
goto again;
 case 4:cout<<"\nInserted item = ";
display();
goto again;
 case 5:cout<<"\nTHANK YOU";
 default:break;
 }
 getch();
}

void insert_beg(int item)
{ temp=(node*)malloc(sizeof(node));
  temp->info=item;
  temp->next=start;
  start=temp;
}

void insert_end(int item)
{ temp=(node*)malloc(sizeof(node));
  temp->info=item;
  temp->next=NULL;
  node* current=start;
  while(current->next!=NULL)
    {current=current->next;
    }
  current->next=temp;
}

void insert_spe(int item,int location)
{ temp=(node*)malloc(sizeof(node));
  temp->info=item;
  node* current=start;
  int count=1;
  while (count <location-1)
     {current=current->next;
      count=count+1;
     }
  temp->next=current->next;
  current->next=temp;
}

void display()
{ temp=start;
  while(temp!=NULL)
  { cout<<temp->info<<" ";
    temp=temp->next;
  }
  cout<<"\n";
}