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Understanding Implicitly Typed Local Variables

The first new language feature of C# 2008 we will examine is the implicit typing of local variables,

using a new Console Application aptly named ImplicitlyTypedLocalVars. As you have learned since

the very beginning of this text, local variables (such as variables declared in a method scope) are

declared in a very predictable (and 

explicit) manner:

static void DeclareExplicitVars()

{

// Explicitly typed local variables

// are declared as follows:

// dataType variableName = initialValue;

int myInt = 0;

bool myBool = true;

string myString = "Time, marches on...";

}

C# 2008 now provides a new keyword, var, which you can use in place of specifying a formal

data type (such as int, bool, or string). When you do so, the compiler will automatically infer the

underlying data type based on the initial value used to initialize the local data point. For example,

the previous variables can now be declared as follows:

static void DeclareImplicitVars()

{