#include <stdio.h>
#include <stdlib.h>
#include <math.h>
 
size_t bits_needed(int n)
{
	return floor(log2(n) + 1);
}
 
char *to_binary_string(int n) 
{
	size_t num_elements = bits_needed(n) + 1;
	char *bit_chars = malloc(num_elements);
 
	bit_chars[num_elements - 1] = '\0';
 
	while (--num_elements) {
		int quotient = n / 2, remainder = n % 2;
		printf("%d / 2 = %d, %d %% 2 = %d\n", n, quotient, n, remainder);
		bit_chars[num_elements - 1] = remainder == 1 ? '1' : '0';
		n = quotient;
	}
 
	return bit_chars;
}
 
int main() 
{
 
	int a = 99, b = 131;
 
	//puts(to_binary_string(a));
	//puts(to_binary_string(b));
 
	printf("%d %.0f", 16 >> 4);
 
	return 0;
}
 

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