C++ game to find out number

#include<iostream.h>
#include<conio.h>
#include<stdlib.h>

void main()
{
    clrscr();

    int n,k,c=0;

    k = rand()%100;

    cout<<"Computer has selected a number b/w 0-100 and save it in its memory"<<endl;

    in:
    cout<<"Enter the number to find out the hidden number = ";
    cin>>n;
    c++;

    if(n>k)
        cout<<"Your number greater"<<endl;
    if(n<k)
        cout<<"YOur number is smaller"<<endl;

    if(n==k)
    {
        clrscr();
        cout<<endl;
        cout<<"The number is found"<<endl;
        cout<<"The number is "<<k<<endl;
        cout<<"You find out the number after mistakes = "<<c<<endl;

        getch();

        exit(0);
    }
    goto in;
}

Computer has selected a number b/w 0 - 100 and save it in its memory
Enter the number to find out the hidden number = 50
Your number is smaller
Enter the number to find out the hidden number = 60
Your number is smaller
Enter the number to find out the hidden number = 70
Your number is smaller
Enter the number to find out the hidden number = 80
Your number is smaller
Enter the number to find out the hidden number = 75
Your number is smaller
Enter the number to find out the hidden number = 78
Your number is smaller
Enter the number to find out the hidden number = 79

The number is found
The number is 79
You find out the number after mistakes = ?