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Declarations

Declarations

In this lesson, we will learn how to declare and initialize the components of C# a code.

Number of Declarations Per-Line

One declaration per line is recommended since it encourages commenting. In other words:

int level; // indentation level
int size; // size of table

Do not put more than one variable or variables of different types on the same line when declaring them. Avoid:

int a, b; //What is 'a'? What does 'b' stand for?

The above example also demonstrates the drawbacks of non-obvious variable names. Be clear when naming variables.

Initializations

Try to initialize local variables as soon as they are declared. For example:

string name = myObject.Name;

or

int val = time.Hours;

Class and Interface Declarations

When coding C# classes and interfaces, the following formatting rules should be followed:

  • No space between a method name and the parenthesis ( starting its parameter list.
  • The opening brace { appears in the next line after the declaration statement.
  • The closing brace } starts a line by itself indented to match its corresponding opening brace.

For example :

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class MySample : MyClass, IMyInterface
{
  int myInt;
  public MySample(int myInt)
  {
    this.myInt = myInt ;
  }
  void Inc()
  {
    ++myInt;
  }
  void EmptyMethod()
  {
  }
}