#include <iostream> #include <iomanip> using namespace std; // This program will

Question

#include <iostream>

#include <iomanip>

using namespace std;

// This program will demonstrate the scope rules.

// PLACE YOUR NAME HERE

const double PI = 3.14;

const double RATE = 0.25;

void findArea(float, float&);

void findCircumference(float, float&);

int main()

{

       cout << fixed << showpoint << setprecision(2);

       float radius = 12;

      

       cout <<" Main function outer block" << endl;

       cout <<" LIST THE IDENTIFIERS THAT are active here" << endl << endl;

       {

              float area;

              cout << "Main function first inner block" << endl;      

              cout << "LIST THE IDENTIFIERS THAT are active here" << endl << endl;

             

              // Fill in the code to call findArea here

             

              cout << "The radius = " << radius << endl;

              cout << "The area = " << area << endl << endl;

       }

       {

        float radius = 10;

              float circumference;

             

              cout << "Main function second inner block" << endl;

              cout << "LIST THE IDENTIFIERS THAT are active here" << endl << endl;

             

              // Fill in the code to call findCircumference here

             

              cout << "The radius = " << radius << endl;

              cout << "The circumference = " << circumference << endl << endl;

             

       }

      

       cout << "Main function after all the calls" << endl;

       cout << "LIST THE IDENTIFIERS THAT are active here" << endl << endl;

         

       return 0;

}

// *********************************************************************

//                           findArea

//  

//   task:     This function finds the area of a circle given its radius

//   data in: radius of a circle

//   data out: answer (which alters the corresponding actual parameter)

//

//   ********************************************************************

void findArea(float rad, float& answer)

{

      

       cout << "AREA FUNCTION" << endl << endl;

       cout << "LIST THE IDENTIFIERS THAT are active here"<< endl << endl;

      

       // FILL in the code, given that parameter rad contains the radius, that

       // will find the areato be stored in answer

      

}

// ******************************************************************************

//                           findCircumference

//  

//   task:     This function finds the circumference of a circle given its radius

//   data in: radius of a circle

//   data out: distance (which alters the corresponding actual parameter)

//

//   *****************************************************************************

void findCircumference(float length, float& distance)

{

       cout << "CIRCUMFERENCE FUNCTION" << endl << endl;

       cout << "LIST THE IDENTIFIERS THAT are active here" << endl << endl;

      

       // FILL in the code, given that parameter length contains the radius,

       // that will find the circumference to be stored in distance

      

}

Exercise 1: Fill in the following chart by listing the identifiers (function names, variables, constants) GLOBALMain Main Main Area Circum- (inner 1)(inner 2) Exercise 2: For each cout instruction that reads: cout

Explanation / Answer

#include <iostream>
#include <iomanip>
using namespace std;
// This program will demonstrate the scope rules.
// PLACE YOUR NAME HERE

const double PI = 3.14;
const double RATE = 0.25;

void findArea(float, float&);
void findCircumference(float, float&);

int main()
{
cout << fixed << showpoint << setprecision(2);
float radius = 12;
  
cout <<" Main function outer block" << endl;
cout << "area, radius and PI are active here"<< endl << endl;
{
float area;
cout << "Main function first inner block" << endl;
cout << "area, radius and PI are active here"<< endl << endl;

// Fill in the code to call findArea here
findArea(radius, area);
cout << "The radius = " << radius << endl;
cout << "The area = " << area << endl << endl;
}
{
float radius = 10;
float circumference;

cout << "Main function second inner block" << endl;
cout << "area, radius and PI are active here"<< endl << endl;

// Fill in the code to call findCircumference here
findCircumference(radius, circumference);
cout << "The radius = " << radius << endl;
cout << "The circumference = " << circumference << endl << endl;

}
  
cout << "Main function after all the calls" << endl;
cout << "area, radius and PI are active here"<< endl << endl;

return 0;
}

// *********************************************************************
// findArea
//
// task: This function finds the area of a circle given its radius
// data in: radius of a circle
// data out: answer (which alters the corresponding actual parameter)
//
// ********************************************************************


void findArea(float rad, float& answer)
{
  
cout << "AREA FUNCTION" << endl << endl;
cout << "area, radius and PI are active here"<< endl << endl;
  
// FILL in the code, given that parameter rad contains the radius, that
// will find the areato be stored in answer
answer = PI * rad * rad;
  
}

// ******************************************************************************
// findCircumference
//
// task: This function finds the circumference of a circle given its radius
// data in: radius of a circle
// data out: distance (which alters the corresponding actual parameter)
//
// *****************************************************************************




void findCircumference(float length, float& distance)

{
cout << "CIRCUMFERENCE FUNCTION" << endl << endl;
cout << "area, radius and PI are active here"<< endl << endl;
  
// FILL in the code, given that parameter length contains the radius,
// that will find the circumference to be stored in distance
distance = 2 * PI * length;
  
}

Output:

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