C++ Program to Convert Decimal to Binary

Program 1

// Decimal to Binary
#include<iostream>
#define clrscr() system("cls")
using namespace std;

int main()
{
    int d,bin[100],i=0,r;
    clrscr();
    cout<<"\nEnter decimal number";
    cin>>d; 
    while(d!=0) 
    {  
         r=d%2;   
         bin[i]=r; 
         d=d/2;  
         i++;
    }
    i--;
    while(i>=0)
    {
        cout<<bin[i];
        i--;
    }
    return 0;
}