Assignment 4 Solutions

Assignment 4
Problem 1:
Coding:
using System;
namespace Assignment_4_Problem_1_solution
{
class PassDemo
{
// Divide() is used to divide two value and return the answer
public double Divide(double numerator, double denominator = 10)
{
// return 0 if denominator is 0
if (denominator == 0)
{
return 0;
}
// return the result of division
return numerator / denominator;
}
// Arithmetic() is used to perform arithmeric operation on its parameter
public void Arithmetic(int value1,int value2,out int minimum, out int
maximum, out int sum, out int product)
{
// determine min of value1 and value2
minimum = Math.Min(value1, value2);
// determine max of value1 and value2
maximum = Math.Max(value1, value2);
// determine sum of value1 and value2
sum = value1+value2;
// determine product of value1 and value2
product = value1 * value2;
}
}
class Program
{
static void Main(string[] args)
{
// create objects of the class PassDemo
PassDemo passdemo = new PassDemo();
// test Divide() of PassDemo with pass by value
Console.WriteLine("pass by value...");
Console.WriteLine("\tnumerator = 10.00000, denominator = 20.00000,
result = " +passdemo.Divide(10.00000, 20.00000).ToString("0.00000"));
// test Divide() of PassDemo with pass by default
Console.WriteLine("pass using default...");
Console.WriteLine("\tnumerator = 10.00000, denominator defaulted,
result = " + passdemo.Divide(10.00000).ToString("0.00000"));

// test Divide() of PassDemo with zero divide
Console.WriteLine("zero divide..");
Console.WriteLine("\tnumerator = 10.00000, denominator = 0.00000,
result = " + passdemo.Divide(10.00000, 0.00000).ToString("0.00000"));
// test Divide() of PassDemo with named parameters
Console.WriteLine("named parameters...");
double numerator = 30.00000;
double denominator = 100.00000;
double result = passdemo.Divide(numerator, denominator);
Console.WriteLine("\tnumerator = {0}, denominator = {1}, result =
{2}", numerator, denominator, result.ToString("0.00000"));
// test Arithmetic() of PassDemo with out parameters
Console.WriteLine("arithmetics using out parameters..");
int min, max, sum, product;
passdemo.Arithmetic(50, 20, out min, out max, out sum, out product);
Console.WriteLine("\tval1 = 50, val2 = 20, min = {0}, max = {1}, sum
= {2}, product = {3}", min, max, sum, product);
Console.ReadKey();
}
}
}
Output:
Problem 2:
Coding:
using System;
namespace Assignment_4_Problem_2_solution
{
class RefDemo
{
// AddToVals() is used to increment value 1 and value 2 by a increment
value
public void AddToVals(ref int val1,ref int val2, int increment)
{
// increment value 1 and value 2
val1 += increment;
val2 += increment;
}

// Swap() is used to swap value 1 and value 2
public void Swap(ref int val1,ref int val2)
{
int temp = val1;
val1 = val2;
val2 = temp;
}
}
class Program
{
static void Main(string[] args)
{
// create object of the class RefDemo
RefDemo refDemo = new RefDemo();
int val1 = 10;
int val2 = 20;
int increment = 25;
// display data in value1 and value2 before adding
Console.WriteLine("AddToVals...");
Console.WriteLine("\tCalling with val1 = {0}, val2 = {1}", val1,
val2);
// call AddToVals()
refDemo.AddToVals(ref val1, ref val2, increment);
// display data in value1 and value2 after adding
Console.WriteLine("After AddToVals has been called...");
Console.WriteLine("\tval1 is now {0}, val2 is now = {1}", val1,
val2);
// call Swap() to swap values
refDemo.Swap(ref val1, ref val2);
// display value1 and value2 after swapping
Console.WriteLine("After SwapVals has been called...");
Console.WriteLine("\tval1 is now {0}, val2 is now = {1}", val1,
val2);
Console.ReadKey();
}
}
}
Output: