C# provides a special data types, the nullable types, to which you can assign normal range of values as well as null values. C# Methods For example, you can store any value from -2,147,483,648 to 2,147,483,647 or null in a Nullable<Int32> variable. Similarly, you can assign true, false, or null in a Nullable<bool> variable. Syntax for declaring a nullable type is as follows: < data_type> ? <variable_name> = null; The following example demonstrates use of nullable data types: using System ; namespace CalculatorApplication { class NullablesAtShow { static void Main ( string [] args ) { int ? num1 = null ; int ? num2 = 45 ; double ? num3 = new double ?(); double ? num4 = 3.14157 ; bool ? boolval = new bool ?(); // display the values Console . WriteLine ( "Nullables at Show: {0}, {1}, {2}, {3}" , ...
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