I NEED HELP finishing this program its the last one i have. //******************

Question

I NEED HELP finishing this program its the last one i have.

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

#include <fstream>

#include <iomanip>

#include <iostream>

#include <string>

#include "Circle.hpp"

using namespace std;

//---------------------------------------------------------------------------------------------------------------

// Reads a file containing information for several circles using a counting loop.

//---------------------------------------------------------------------------------------------------------------

void PrintAreas1(string pFname)

{

cout << "Printing the areas of the circles in " << pFname << " using a counting loop." << endl;

// Define ifstream object named fin and open the file with name pFname for reading. Note: to open the file

// for reading, you must pass pFname.c_str() as the argument to the ifstream ctor.

???

// Define an int variable named n and read the first integer from fin into n.

???

// Write a counting loop that will execute n times.

???

// Define three int variables named x, y, and r. Read three integers from fin into x, y, and r.

???

???

// Define and create a Circle object named c passing x, y, and r as arguments to the ctor.

???

// Display the area of c by calling the Area() function.

???

// End the loop

???

// Close the input file stream.

???

cout << endl;

}

//---------------------------------------------------------------------------------------------------------------

// Reads a file containing information for several circles using a sentinel loop. The sentinel is -1 for x.

//---------------------------------------------------------------------------------------------------------------

void PrintAreas2(string pFname)

{

cout << "Printing the areas of the circles in " << pFname << " using a sentinel loop." << endl;

// Define ifstream object named fin and open the file with name pFname for reading. Note: to open the file

// for reading, you must pass pFname.c_str() as the argument to the ifstream ctor.

???

// Define three int variables named x, y, and r. Read three integers from fin into x, y, and r.

???

// While x is not the sentinel value Do

???

// Define and create a Circle object named c passing x, y, and r as arguments to the ctor.

???

// Display the area of c by calling the Area() function.

???

// Read three integers from fin into x, y, and r.

???

// End the loop

???

Burger :: Computer Science & Engineering :: Arizona State University Page 3

CSE100 Principles of Programming with C++ Homework Assignment 3 :: 25 pts

// Close the input file stream.

???

cout << endl;

}

//---------------------------------------------------------------------------------------------------------------

// Reads a file containing information for several circles using an end of file loop.

//---------------------------------------------------------------------------------------------------------------

void PrintAreas3(string pFname)

{

cout << "Printing the areas of the circles in " << pFname << " using an EOF loop." << endl;

// Define ifstream object named fin and open the file with name pFname for reading. Note: to open the file

// for reading, you must pass pFname.c_str() as the argument to the ifstream ctor.

???

// Define three int variables named x, y, and r.

???

// Write an end of file loop that reads an integer from fin into x in the conditional expression

???

// Read two integers from fin into y and r.

???

// Define and create a Circle object named c passing x, y, and r as arguments to the ctor.

???

// Display the area of c by calling the Area() function.

???

// End the loop

???

// Close the input file stream.

???

cout << endl;

}

int main()

{

cout << fixed << setprecision(3);

PrintAreas1("Circles1.txt");

PrintAreas2("Circles2.txt");

PrintAreas3("Circles3.txt");

return 0;

}

Assume the Circle class functions are implemented in Circle.cpp. The figure below shows three Circle objects, c1, C2, and c3 drawn on a window of dimensions 450 x 350. The center of C1 is at (126, 119) and the radius is 72. Suppose the information for several circil objects is stored in three text files named Circles1.txt, Circle2.txt, and

Explanation / Answer

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

#include <fstream>

#include <iomanip>

#include <iostream>

#include <string>

#include "Circle.cpp"

using namespace std;

//---------------------------------------------------------------------------------------------------------------

// Reads a file containing information for several circles using a counting loop.

//---------------------------------------------------------------------------------------------------------------

void PrintAreas1(string pFname)

{

cout << "Printing the areas of the circles in " << pFname << " using a counting loop." << endl;

// Define ifstream object named fin and open the file with name pFname for reading. Note: to open the file

// for reading, you must pass pFname.c_str() as the argument to the ifstream ctor.

ifstream fin(pFname.c_str());

// Define an int variable named n and read the first integer from fin into n.

int n;

fin>>n;

// Write a counting loop that will execute n times.

int i;

for(i=0;i<n;i++){

// Define three int variables named x, y, and r. Read three integers from fin into x, y, and r.

int x,y,r;

fin>>x>>y>>r;

// Define and create a Circle object named c passing x, y, and r as arguments to the ctor.

Circle c(x,y,r);

// Display the area of c by calling the Area() function.

c.Area();

// End the loop

}

// Close the input file stream.

fin.close();

cout << endl;

}

//---------------------------------------------------------------------------------------------------------------

// Reads a file containing information for several circles using a sentinel loop. The sentinel is -1 for x.

//---------------------------------------------------------------------------------------------------------------

void PrintAreas2(string pFname)

{

cout << "Printing the areas of the circles in " << pFname << " using a sentinel loop." << endl;

// Define ifstream object named fin and open the file with name pFname for reading. Note: to open the file

// for reading, you must pass pFname.c_str() as the argument to the ifstream ctor.

ifstream fin(pFname.c_str());

// Define three int variables named x, y, and r. Read three integers from fin into x, y, and r.

int x,y,z;

fin>>x>>y>>z;

// While x is not the sentinel value Do

while(x!=-1){

// Define and create a Circle object named c passing x, y, and r as arguments to the ctor.

Circle c(x,y,r);

// Display the area of c by calling the Area() function.

c.Area();

// Read three integers from fin into x, y, and r.

fin>>x>>y>>r;

// End the loop

}

//Burger :: Computer Science & Engineering :: Arizona State University Page 3

//CSE100 Principles of Programming with C++ Homework Assignment 3 :: 25 pts

// Close the input file stream.

fin.close();

cout << endl;

}

//---------------------------------------------------------------------------------------------------------------

// Reads a file containing information for several circles using an end of file loop.

//---------------------------------------------------------------------------------------------------------------

void PrintAreas3(string pFname)

{

cout << "Printing the areas of the circles in " << pFname << " using an EOF loop." << endl;

// Define ifstream object named fin and open the file with name pFname for reading. Note: to open the file

// for reading, you must pass pFname.c_str() as the argument to the ifstream ctor.

ifstream fin(pFname.c_str());

// Define three int variables named x, y, and r.

int x,y,r;

// Write an end of file loop that reads an integer from fin into x in the conditional expression

while(fin>>x){

// Read two integers from fin into y and r.

fin>>y>>r;

// Define and create a Circle object named c passing x, y, and r as arguments to the ctor.

Circle c(x,y,r);

// Display the area of c by calling the Area() function.

c.Area();

// End the loop

}

// Close the input file stream.

fin.close();

cout << endl;

}

int main()

{

cout << fixed << setprecision(3);

PrintAreas1("Circles1.txt");

PrintAreas2("Circles2.txt");

PrintAreas3("Circles3.txt");

return 0;

}

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