Binary conversion

[WookieWarrior2]

I am trying to figure out how to convert a number to binary. I am running into the problem where it either goes into an infinite loop or it only does one conversion. Any help just trying to figure out how to properly do the loop would be amazing, thanks.


#include <conio.h>
#include <stdio.h>
#include <Windows.h>

int main()
{
int a, b, c, d, e;


printf("Input number to convert to binary here:");
scanf("%i", &a);
flushall();
Sleep(1000);
system("cls");


c = a % 2;
printf("%i", c);

do
{

a = a / 2;

b = a % 2;
printf("%i", b);




} while (a =! 1);



getch();
return 0;
}

[48T7M4Gy]

 #include <iostream>

using namespace std;

int main()
{
   int a = 0;

   cout << "Input number to convert to binary here: ";
   cin >> a;

   do
   {
      cout << a % 2;
      a = a/2;
   } while (a != 0);

return 0;
}

( reverse order )

[48T7M4Gy]

#include <iostream>

using std::cout;
using std::cin;
using std::endl;

int main()
{
	int store[100] = { 0 };
	int index = 0;

	int a = 0;

	cout << "Input number to convert to binary here: ";
	cin >> a;

	do
	{
		store[index] = a % 2;
		cout << store[index];
		a = a / 2;
		index++;
	} while (a != 0);
	cout << endl;

	for (int i = 0; i < index; i++)
		cout << store[index - i - 1];
	cout << endl;

	return 0;
}

In correct order :)

[Pizza God]

WookieWarrior2 please use code tags when you are typing the code into the text box to make it easier for everyone to read your code

Example:

int main(){

return 0;

}

vs

int main(){

     return 0;

}

*This code is not correct and won't do anything it is just an example.

[JLBorges]

// invariant: result is within ULLONG_MAX
unsigned long long to_binary( unsigned int number )
{
    if( number < 2 ) return number ;
    else return to_binary( number/2 ) * 10 + number % 2 ;
}

void print_binary( unsigned long long number )
{
    if( number < 2 ) printf( "%llu", number ) ;
    else
    {
        print_binary( number/2 ) ;
        print_binary( number%2 ) ;
    }
}

http://coliru.stacked-crooked.com/a/0a1c8ca2faa51f38