Question

using c/c++

Q1 (15 Marks) Console Application for Student Data 1- Write a function named Average that

1. Receives two integer numbers as parameter and returns the average
2. Is used in a main function. Main() stays in a loop and asks user to enter 2 numbers and then shows the average using the Average function above

2. Define a class named Student with following members:
   1. private data: 2 grades and a GPA (average).
   2. public constructor to initialize the members
   3. a public function named SetGrades that has two parameters to be used to set the grades, and returns true if numbers are both acceptable (between 0 and 100) and returns false with no change in grades if numbers are not acceptable.
   4. a public function named GetGPA that calculates and returns the GPA (using the Average function).
3. Use the Student class in main() so that it
   1. creates a Student object
   2. sets the numbers user has entered as grades for student
   3. gets the average from the Student object and prints it
   4. stays in a loop and repeats
4. Define a child class named Student2 based on Student that
   1. overrides Student::SetGrades and adds a call to Average to set the GPA when the grades are changed
   2. overrides the Student::GetGPA so no call is made to Average, and only the current GPA is returned
5. Modify the Average function so it receives an array of int numbers and an int size
   1. Write the code for Average so that it calculates the average of the array
   2. Modify the Student and Student2 classes to have work with the new Average function (hint: use an array for grades instead of two separate variables)

Answer 1

(a)

#include <iostream>
using namespace std;
int i=0;
float avg;
int average(int x, int y);
int main()

{
while(i<=1)

{
cout<<i;
int a,b;
cout << "Enter a integers : " << endl;
cin>>a;
if(i==0)
{
b=a;

}
if(i==1)
{

float ret = average(a,b);

cout << "The average of " << a << " and "<<b<< " is " << ret<< "." << endl;
}
i++;

}

}
int average(int x,int y)
{
int sum;
sum=x+y;
avg=sum/2;

return avg;

}