Decimal to binary

[NvIs]

I'm having trouble figuring out how to convert a decimal such as 4.050 to binary, octal, and hex.
I'm familiar using modulus, but since you can't use modulus with floats, I'm lost...

Heres what I got while using int, this program converts to binary.

#include <iostream>
#include <iomanip>
using namespace std;


int main()
{
  int num;
		int total = 0;
		cout << "Please enter a decimal: ";
		cin >> num;
		while(num > 0)
		{
		    num /= 2;
			total = num % 2;

			cout << total << " ";
		}
    return 0;
}

[NvIs]

any help please?

[stereoMatching]

http://www.cplusplus.com/reference/clibrary/cmath/modf/

if you want convert float like 0.34 to hex
0.34 * 16 = 5.44
convert 5 to hex(.5)
0.44 * 16 = 7.04(.7)

if you stop by here, the answer would be .57
you could stop the program until the fractional number reach zero or
stop when the precision is enough for you

[moorecm]

Perhaps the OP is in a different locale where that number is an integer (4050).

Try swapping lines 14 and 15.