Question

Using C#, create a class in a file MathOP.cs.

MathOP.cs needs to include the following methods

1. MathAdd: to add two numbers
2. MathSub: to subtract two numbers

Next, create a new class MathOP2 (MathOP2.cs) that Inherits from MathOP.cs.

MathOP2.cs needs to include the following methods

1. MathMult: to multiply two numbers
2. MathDiv: to divide two numbers
3. Allinone: accepts two parameters and set 4 class variables: v_add, v_subtract, v_multiply, and v_divide and show how these values are retrieved.

Finally, create a program TestMathOP.cs to test the classes.                                                               

TestMathOP.cs needs to do the following:

     Enter the First number >>

     Enter the Second Number >>

     The sum of the numbers is

     The subtraction of the two numbers is

    The multiplication of the two numbers is

    The division of the two numbers is

     Do you want to exist (Y/N)?

Answer 1

Dear student please find the below code for each of the three files

MathOP.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication12
{
public class MathOP
{
public float MathAdd(float a, float b)
{
return a + b;
}
public float MathSub(float a, float b)
{
return a - b;
}
}
}

MathOP2.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication12
{
public class MathOP2: MathOP
{
public float v_add, v_subtract, v_multiply, v_divide;
public float MathMult(float a, float b)
{
return a * b;
}
public float MathDiv(float a, float b)
{
return a / b;
}
public void Allinone(float a,float b)
{
v_add=MathAdd(a,b);
v_subtract=MathSub(a,b);
v_multiply=MathMult(a,b);
v_divide=MathDiv(a,b);
}
}
}

TestMathOP.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication12
{
class TestMathOP
{
static void Main(string[] args)
{
float a, b;
MathOP2 mOP = new MathOP2();
while (true)
{
Console.WriteLine("Enter the First number >>");
a = float.Parse(Console.ReadLine());
Console.WriteLine("Enter the Second Number >>");
b = float.Parse(Console.ReadLine());
mOP.Allinone(a, b);
Console.WriteLine("The sum of the numbers is" + mOP.v_add.ToString());
Console.WriteLine("The subtraction of the two numbers is" + mOP.v_subtract.ToString());
Console.WriteLine("The multiplication of the two numbers is" + mOP.v_multiply.ToString());
Console.WriteLine("The division of the two numbers is" + mOP.v_divide.ToString());
Console.WriteLine("Do you want to exit (Y/N)?");
char m = Console.ReadKey().KeyChar;
if (m == 'Y' || m == 'y')
break;
}
}
}
}

Screenshot of output:

Enter the First number >> 25 Enter the Second Number >> 5 The sum of the numbers is30 The subtraction of the two numbers is20 The multiplication of the two numbe rs is125 The division of the two numbers is5 Do you want to exit (Y/N>? п Enter the First number >> 23 Enter the Second Number >> 5 The sum of the numbers is28 The subtraction of the two numbers is18 The multiplication of the two numbe rs is115 The division of the two numbers is4.6 Do you want to exit <Y/N>?

If you have any doubt please comment below for Clarification also do not forget to hit the like button Thank You :)