C#: When a structure and a class instance is passed to a method

Last update on December 20 2024 12:44:40 (UTC/GMT +8 hours)

Write a program in C# Sharp that shows what happens when a structure and a class instance are passed to a method.

Sample Solution:-

C# Sharp Code:

using System;

// Declaration of a class named newClass
class newClass
{
    public int n; // Member variable 'n' of the class
}

// Declaration of a structure named newStruct
struct newStruct
{
    public int n; // Member variable 'n' of the structure
}

class strucExer5
{
    // Method to modify the value of 'n' in a newStruct instance
    public static void trackStruct(newStruct st)
    {
        st.n = 8; // Modifying the 'n' value of the passed newStruct instance (won't affect original due to pass-by-value)
    }

    // Method to modify the value of 'n' in a newClass instance
    public static void tracClass(newClass cl)
    {
        cl.n = 8; // Modifying the 'n' value of the passed newClass instance (will affect original due to pass-by-reference)
    }

    // Main method
    public static void Main()
    {
        // Displaying a message indicating the scenario when a structure and a class instance are passed to a method
        Console.Write("\n\nWhen a structure and a class instance is passed to a method :\n");
        Console.Write("--------------------------------------------------------------\n");

        // Creating instances of newStruct and newClass
        newStruct ns = new newStruct();
        newClass nc = new newClass();

        // Assigning initial values to 'n' of newStruct and newClass instances
        ns.n = 5;
        nc.n = 5;

        // Calling trackStruct method passing newStruct instance (will not modify original instance due to pass-by-value)
        trackStruct(ns);

        // Calling tracClass method passing newClass instance (will modify the original instance due to pass-by-reference)
        tracClass(nc);

        // Displaying the values of 'n' in both newStruct and newClass instances after method calls
        Console.WriteLine("\nns.n = {0}", ns.n); // Displaying value of 'n' in newStruct instance (unchanged)
        Console.WriteLine("nc.n = {0}\n", nc.n); // Displaying value of 'n' in newClass instance (modified)
    }
}

Sample Output:

When a structure and a class instance is passed to a method :                                                    
--------------------------------------------------------------                                                
ns.n = 5                                                                                                      
nc.n = 8

Flowchart:

C# Sharp Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a program in C# Sharp to create a structure and assign the value and call it.
Next: Write a program in C# Sharp to declares a struct with a property, a method, and a private field.