Modify program to use pointers instead of subscripts (You still have to declare and initialize the array)

 

#include <stdio.h>

#define MONTHS 12 // number of months in a year

#define YEARS 5 // number of years of data

int main(void)

{

// initializing rainfall data for 2000 - 2004

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 }

};

int year, month;

float subtot, total;

 

printf(" YEAR RAINFALL (inches)n");

for (year = 0, total = 0; year < YEARS; year++)

{ // for each year, sum rainfall for each month

for (month = 0, subtot = 0; month < MONTHS; month++)

//subtot += rain[year][month];

subtot += *(*(rain + year) + month);

printf("%5d %15.1fn", 2000 + year, subtot);

total += subtot; // total for all years

}

printf("nThe yearly average is %.1f inches.nn",

total / YEARS);

printf("MONTHLY AVERAGES:nn");

printf(" Jan Feb Mar Apr May Jun Jul Aug Sep Oct ");

printf(" Nov Decn");

 

for (month = 0; month < MONTHS; month++)

{ // for each month, sum rainfall over years

for (year = 0, subtot = 0; year < YEARS; year++)

//subtot += rain[year][month];

subtot += *(*(rain + year) + month);

printf("%4.1f ", subtot / YEARS);

}

printf("n");

 

return 0;

}

ComputerScienceExpert

(11)

Status NEW Posted 26 Apr 2017 12:04 AM My Price 9.00

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