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C# Call By ReferenceC# provides a ref keyword to pass argument as reference-type. It passes reference of arguments to the function rather than copy of original value. The changes in passed values are permanent and modify the original variable value. C# Call By Reference Exampleusing System; namespace CallByReference { class Program { // User defined function public void Show(ref int val) { val *= val; // Manipulating value Console.WriteLine("Value inside the show function "+val); // No return statement } // Main function, execution entry point of the program static void Main(string[] args) { int val = 50; Program program = new Program(); // Creating Object Console.WriteLine("Value before calling the function "+val); program.Show(ref val); // Calling Function by passing reference Console.WriteLine("Value after calling the function " + val); } } } Output: Value before calling the function 50 Value inside the show function 2500 Value after calling the function 2500
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