나만은 연습문제 안습풀이

굉장히 더러운 코드이지만... 공유해봐요.

#include <stdio.h>

#define	MONTHS 12
#define	YEARS 3

void		years_index(void)
{
	int		i;

	printf("Year Index\t:");
	i = 1;
	while(i < 13)
	{
		printf("\t%d", i);
		i++;
	}
	printf("\n");
}

void		tem_data(int i, double *ptr)
{
	int		j;

	j = 0;
	printf("Yaer\t%d\t:", i);
	while (j < MONTHS)
	{
		printf("\t%.1f", ptr[j]);
		j++;
	}
	printf("\n");
}

void		year_avg(int i, double *ptr)
{
	int		j;
	double	sum;

	j = -1;
	sum = 0;
	printf("Year\t%d\t:\taverage temperature = ", i);
	while (++j < MONTHS)
		sum += ptr[j];
	sum /= MONTHS;
	printf("%.1f\n", sum);
}

void		month_avg(double *a, double *b, double *c)
{
	int 	i;
	int		j;
	double	avg_tem;
	double	*ptr[3];

	i = -1;
	ptr[0] = a;
	ptr[1] = b;
	ptr[2] = c;
	printf("Avg temp\t:");
	while (++i < MONTHS)
	{
		avg_tem = 0.0;
		j = 0;
		while (j < YEARS)
		{
			avg_tem += ptr[j++][i];
		}
		avg_tem /= (double)YEARS;
		printf("\t%.1f", avg_tem);
	}
	printf("\n");
}

int			main(void)
{
	double	year2016[MONTHS] = { -3.2, 0.2, 7.0, 14.1, 19.6, 23.6, 26.2, 28.0, 23.1, 16.1, 6.8, 1.2};
	double	year2017[MONTHS] = { -1.8, -0.2, 6.3, 13.9, 19.5, 23.3, 26.9, 25.9, 22.1, 16.4, 5.6, -1.9};
	double	year2018[MONTHS] = { -4.0, -1.6, 8.1, 13.0, 18.2, 23.1, 27.8, 28.8, 21.5, 13.1, 7.8, -0.6};

	printf("[Temperature Data]\n");
	years_index();
	tem_data(0, year2016);
	tem_data(1, year2017);
	tem_data(2, year2018);
	printf("\n");
	printf("[Yearly average temperatures of 3 years]\n");
	year_avg(0, year2016);
	year_avg(1, year2017);
	year_avg(2, year2018);
	printf("\n");
	printf("[Monthly average temperatures for 3 years]\n");
	years_index();
	month_avg(year2016, year2017, year2018);
	return (0);
}