C++ - Decimal to binary converting

Question

I wrote a \'simple\' (it took me 30 minutes) program that converts decimal number to binary. I am SURE that there\'s a lot simpler way so can you show me? Here\'s the code:<

Answer 1

Non recursive solution:

#include 
#include


std::string toBinary(int n)
{
    std::string r;
    while(n!=0) {r=(n%2==0 ?"0":"1")+r; n/=2;}
    return r;
}
int main()
{
    std::string i= toBinary(10);
    std::cout<

Recursive solution:

#include 
#include

std::string r="";
std::string toBinary(int n)
{
    r=(n%2==0 ?"0":"1")+r;
    if (n / 2 != 0) {
        toBinary(n / 2);
    }
    return r;
}
int main()
{
    std::string i=toBinary(10);
    std::cout<