Concept explainers
Explanation of Solution
Passing arrays as an argument:
An array variable can be passed as argument to any method means passing the reference of array variable.
The method has direct access to actual array values because array always passed by reference, method which receives an array as an argument.
Use of ref or out keyword:
The ref or out keyword is used as parameter for method.
- • The receiving method not only has rights to access the array variable, but it also has rights to access the reference variable which was used to pass the array.
For example:
//Declare and initialize the array variable
int[] num = { 1, 2, 3 };
/*Call the displayNumber() method by passing the array variable as argument. */
displayNumber(num);
//Define the displayNumber() method
private void displayNumber(ref int[] a)
{
//Make the "a" reference a different array size
a = new int[6];
//The loop executes until the array value
foreach (int i in a)
//Display the array value in message box
Messagebox...
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Starting Out With Visual C# (5th Edition)
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