C :

#include<stdio.h>
void main()
{
	int i,n,c=0;
	scanf("%d",&n);
	if(n%2==0){
		while(n%2==0){
			c+=1;
			n/=2;
			
		}
		printf("%d",c);
	}else{
		printf("%d",0);
	}
} 

C++ :

#include <iostream>
using namespace std;
int main(){
	int n,i=0;
	cin>>n;
	while(n%2==0){
		n=n/2;
		i++;
	}
	cout<<i<<endl;
}

Python :

n=int(input())
s=0

while n%2==0:
    n=n/2
    s+=1
print(s)