implementation of insertion sort

//program is implemented by shadab khan

#include<iostream.h>

#include<conio.h>

void main()

{

            clrscr();

            int a[5], i,t,p;

            cout<<”enter the 4 element of array”;

            for(i=1;i<=4;i++)

            cin>>a[0];

            a[0]=NULL;

            for(i=2;i<=4;i++)

            {

                        t=a[i];

                        p=i-1;

                        while(t<a[p])

                        {

                        a[p+1]=a[p];

                        P=p-1;

                        }

            a[p+1]=t;

            }

            cout<<”Elements after insertion sort : \n\n”;

            for(i=0;i<=4;i++)

            {

                        cout<<a[i]<<endl;

            }

            getch();

}