Assume the following structure declaration exists for the following questions: s

Question

Assume the following structure declaration exists for the following questions:

struct Rectangle

{

      int length;

      int width;

};

Write a function that accepts a Rectangle structure as its argument and displays the structure’s contents on the screen;

Write a function that uses a Rectangle structure reference variable as its parameter and stores the user’s input in the structure’s members;

Write a function that returns a Rectangle structure. The function should store the user’s input in the members of the structure before returning it.

Explanation / Answer

#include "stdio.h"

struct Rectangle
{
int length;
int width;
};

// PRINTNIG length and width
void printStruct(struct Rectangle a)
{
printf("Length= %d and Width=%d",a.length,a.width);
}

// taking user input of length and width
void refStruct(struct Rectangle* a)
{
// when it is pointer, we have to use a->length instead of a.length
printf("Enter length: ");
scanf("%d",&(a->length));
  
printf("Enter width: ");
scanf("%d",&(a->width));
}

// taking user input of length and width and returning the structure variable
struct Rectangle input()
{
struct Rectangle result;
  
printf("Enter length: ");
scanf("%d",&(result.length));
  
printf("Enter width: ");
scanf("%d",&(result.width));
  
return result;
}

int main(void) {
  
printf("** Test for printing structure ");
struct Rectangle r = {1, 2};
printStruct(r);
  
printf(" ** Test for reference structure ");
struct Rectangle refS;
refStruct(&refS);
printStruct(refS);
  
printf(" ** Test for returning structure ");
struct Rectangle inS = input();
printStruct(inS);
  
return 0;
}

/*SAMPLE OUTPUT

** Test for printing structure
Length= 1 and Width=2

** Test for reference structure
Enter length: 3
Enter width: 6
Length= 3 and Width=6

** Test for returning structure
Enter length: 2
Enter width: 8
Length= 2 and Width=8

*/

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