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Variable Initialization

Variable initialization refers to assigning a value to a variable at the time of declaration. In C#, variables must be initialized before they are used in expressions or calculations.

Key Concepts

  • Variables must be initialized before they can be used.
  • Initialization can occur at the time of declaration or later.
  • Uninitialized variables cannot be used and will result in a compilation error.

Example of Variable Initialization

Code Example

// Initialize a variable at the time of declaration
int x = 5;

// Declare without initialization, then assign a value
int y;
y = 10;

// Output the values to the console
Console.WriteLine($"x = {x}, y = {y}");

Output:

x = 5, y = 10

Code Explanation: The variable x is initialized at the time of declaration, while y is declared first and assigned a value later. Both values are printed to the console.

Output Explanation: The program prints the values x = 5 and y = 10 after they are initialized.

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