Recursive function for Collatz

[lrg52595]

I have to design a recursive code for the collatz coefficient. I feel like i am very close but I cannot seem to call the collatz function correctly.

#include <iostream>
int collatz (int start, int steps=0){
if (start==1){
return steps;
}
else if(start%2!=0) {
steps=++steps;
return collatz(3*start+1);
}
else {
steps=++steps;
return collatz(start/2);
}

}

int main(int argc, char** argv)
{
int steps, start;
std::cout<<"Please enter number\n";
std::cin>>start;

std::cout<<collatz(start,steps)<<"\n";

}


Can anybody see what is wrong? The code has to print all of the numbers the code works through as well as the amount of steps