#include<stdio.h>
#define MONTHS 12
#define YEARS 5
void year_sum(float rain[][MONTHS]);
void output(void);
void month_sum(float rain[][MONTHS]);
int main( void)
{
const float rain[ YEARS][ MONTHS] = {
{4.3,4.3,4.3,3.0,2.0,1.2,0.2,0.2,0.4,2.4,3.5,6.6},
{8.5,8.2,1.2,1.6,2.4,0.0,5.2,0.9,0.3,0.9,1.4,7.3},
{9.1,8.5,6.7,4.3,2.1,0.8,0.2,0.2,1.1,2.3,6.1,8.4},
{7.2,9.9,8.4,3.3,1.2,0.8,0.4,0.0,0.6,1.7,4.3,6.2},
{7.6,5.6,3.8,2.8,3.8,0.2,0.0,0.0,0.0,1.3,2.6,5.2}
};
printf(" YEAR RAINFALL (inches)\n");
year_sum(rain);
output();
month_sum(rain);
return 0;
}
void year_sum(float rain[][MONTHS])
{
float subtot, total;
int month, year;
for (year = 0, total = 0; year < YEARS; year++)
{
for (month = 0, subtot = 0; month < MONTHS; month++)
subtot += rain[year][month];
printf("%5d %15.1f\n", 2010 + year, subtot);
total += subtot;
}
printf("\nThe yearly average is %.1f inches.\n\n", total / YEARS);
}
void output(void)
{
printf(" MONTHLY AVERAGES:\n\n");
printf("Jan Feb Mar Apr May Jun Jul Aug Sep Oct ");
printf("Nov Dec\n");
}
void month_sum(float rain[][MONTHS])
{
int month, year;
float subtot, total;
for (month = 0; month < MONTHS; month++)
{
for (year = 0, subtot = 0; year < YEARS; year++)
subtot += rain[year][month];
printf("%4.1f\t", subtot / YEARS);
}
printf("\n");
}
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