C# Call By Value

In C#, function arguments can be passed to a function by value or by reference. When arguments are passed by value, a copy of the value is passed to the function, and any changes made to the value within the function are not reflected in the original variable. In this tutorial, we will discuss how to pass arguments by value in C#.

Syntax

The syntax for passing an argument by value in C# is as follows:

public void function_name(int parameter_name)
{
    // function code here
}

Example

Let's say we have a function called "Increment" that takes an integer as an argument and increments it by one. Here's an example of passing an argument by value in C#:

public class Program
{
    static void Main(string[] args)
    {
        int x = 5;
        Increment(x);
        Console.WriteLine(x);
    }

    static void Increment(int num)
    {
        num += 1;
    }
}

In the above example, we declare a variable "x" with a value of 5 and pass it to the "Increment" function. The "Increment" function increments the value of "num" by 1, but the value of "x" remains unchanged because the argument was passed by value.

Output

The output of the above example will be:

5

Explanation

In C#, all data types are passed by value by default. When we pass an argument by value, it means that we are passing a copy of the value to the function. Any changes made to the value within the function do not affect the original variable.

In the above example, when we pass the value of "x" to the "Increment" function, a copy of the value is passed and stored in the "num" parameter. When we increment the value of "num", the original value of "x" remains unchanged.

Use

Passing arguments by value is useful when you want to prevent unintended modification of a variable. It ensures that the original variable remains unmodified and the function only operates on a copy of its value.

Important Points

• When passing arguments by value, a copy of the value is passed to the function.
• Any changes made to the value within the function only affect the copy, not the original variable.
• All data types in C# are passed by value by default.

Summary

In this tutorial, we discussed how to pass arguments by value in C#. We covered the syntax, example, output, explanation, use, and important points of passing arguments by value in C#. With this knowledge, you can now understand how to pass arguments by value in C# and utilize it in your own code.