Is first or second molar?

toothnumber.c

#include <stdio.h>
#include <stdbool.h>

static bool is_first_molar(int tooth)
{
	return tooth % 10 == 6;
}

static bool is_second_molar(int tooth)
{
	return tooth % 10 == 7;
}

int main()
{
	int max_fdi_number = 88;


	printf("First Molars: ");
	for( int i = 0; i < max_fdi_number; i++ )
	{
		if( is_first_molar(i) )
		{
			printf("%d ", i);
		}
	}
	printf("\n");
	printf("Second Molars: ");
	for( int i = 0; i < max_fdi_number; i++ )
	{
		if( is_second_molar(i) )
		{
			printf("%d ", i);
		}
	}
	printf("\n");

}