Reference no: EM13167086

 Explain the difference between public data members and private data members. Give an example in the main function to show that one C++ statement is valid and the other is invalid (you can use Grade class in Problem 5.

 

2        What output would be produced by the following program?

#include <iostream>

using std::cout; using std::endl;

int main()

{

      int a[] = {3, 1, 0, 2, 4};

   int b[] = {50, 40, 30, 20, 10};

   for (int i=0; i<5; i++}

cout << b[ a[i] ] << endl;

   return 0;

     }

 

3        The following code has many errors. Please point out and correct them.

#include <iostream>

using namespace std;

class Date

{

public

      Date()

      {

month = day = 0;

}

      setDate(int m, int d)

      {

            month = m;

            day = d;

}

      int getDay();

{

            return day

}

private

int month, day;

}

 

int main()

{

      Date d;

      setDate(10,20);

      cout << getDay() << endl;

      return 0;

}

 

4        What output would be produced by the following program?

.........................

int main()

{

   ifstream fin;

   fin.open("list.dat");

   int count = 0;

   double next, total=0.0;

   cout << fixed << setprecision(2);

   while (fin >> next)

   {

     count++;

     total += next;

     cout << setw(7) << next << endl;

        }

        fin.close();

        cout << "The sum of " << count << " numbers is "

             << total << endl;

   return 0;

}

The file list.dat contains the following five numbers (and nothing more):

10.0001 1.1e2      1.0e-6

5.0007   -5.0008