C Program to find Binary number of a Decimal number in another Method

#include <stdio.h>

int countBit(int);
int main()
{
	int num;
	printf("Enter an integer number :");
	scanf("%d",&num);

	printf("Total number of bits required = %d\n",countBit(num));
	return 0;
}

int countBit(int n)
{
	int count=0,i;
	if(n==0) return 0;
	for(i=0; i< 32; i++)
	{	
		if( (1 << i) & n)
			count=i;
	}
	return ++count;}