Question

Problem 2 Width and height of 10 rectangles have been stored in two arrays called W and H. Write a C program that will pass these arrays to a custom written function which will calculate the area of each rectangle and store the results in a third array called A. Your function should also print the area for the largest rectangle. W 12 18 5 17 6 6 22 5 8 H 10 23 4 11 2 9 35 7 4 15 36 187 12 54 770 20 56 A 120 414

Answer 1

// Defining header for the program
#include <stdio.h>

//This function will calculate the area of all 10 rectangles and return the
// result(i.e. Array of area )
// It will also print the area of largest triangle
int *area_of_rectangles(int *widthArray, int *heightArray){
// local Array will not work here as it will be destroyed from
// memory as function call is over so cannot be returned from function
// static array has lifetime of program so it will not be destroyed till the
// execution of whole program and can be returned from function.
static int areaArray[10];
  
// i is a loop variable
// maxArea will store the area of largest rectangle
int i,maxArea = 0;
for(i=0; i<10; i++){
  
// calculating area of ith rectangle
areaArray[i] = widthArray[i]*heightArray[i];
  
// if area of current rectangle is larger than maxArea then store it in
// maxArea variable
if(areaArray[i] > maxArea){
maxArea = areaArray[i];
}
}
  
printf("Area of largest rectangle = %d \n\n", maxArea);
return areaArray;
}

int main()
{
//define array variable names
int width[10]= {12,18,5,9,17,6,6,22,5,8};
int height[10] = {10,23,3,4,11,2,9,35,4,7};
  
// area is a pointer it will store the address of areaArray (i.e Array of
// area of all rectangles)
int *area = area_of_rectangles(width,height);
  
//loop variable i
int i;
  
// It will print the area of all rectangles
printf("Array of area of all rectangles is :: \n");
for(i=0;i<10;i++){
printf("%d ",area[i]);
}
  
return 0;
}