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The increment operator is ++ operator. If used as postfix on a variable, the value of the variable is first returned and then gets incremented by 1. It is called Postfix increment operator. In the same way, the decrement operator works but it decrements by 1.For example,a++;The following is an example showing how to work with postfix operator −Example Live Demousing System; class Program { static void Main() { int a, b; a = 10; Console.WriteLine(a++); b = a; Console.WriteLine(a); Console.WriteLine(b); } }Output10 11 11
The ICollection interface in C# defines the size, enumerators, and synchronization methods for all nongeneric collections. It is the base interface for classes in the System.Collections namespace.The following are the properties of ICollection interface −Sr.No.Property Name & Description1CountThe number of elements in the ICollection2SyncRootGets an object that useful to synchronize access to the ICollection.The following are the methods of ICollection interface −Sr.No.Method Name & Description1CopyTo(Array^,Int32)The method copies the elements of the ICollection to an Array.2GetEnumerator()The GetEnumerator() method returns an enumerator that iterates through a collection
IEnumerable is an interface defining a single method GetEnumerator() that returns an IEnumerator interface. It is the base interface for all non-generic collections that can be enumerated.This works for read-only access to a collection that implements that IEnumerable can be used with a foreach statement.It has a single method −GetEnumerator() − This method returns an enumerator that iterates through a collection.The following is the implementation of the GetEnumerator() method of the IEnumerable interface in C# −IEnumerator IEnumerable.GetEnumerator() { return (IEnumerator) GetEnumerator(); }The following are the extension methods of the IEnumerable interface in C# −Sr.NoMethod Name & Description1AsParallel()Enables parallelization of a ... Read More
The ICloneable interface creates a copy of the exisiting object i.e a clone.It only has a single method −Clone() − The clone() method creates a new object that is a copy of the current instance.The following is an example showing how to perform cloning using Icloneable interface −Example Live Demousing System; class Car : ICloneable { int width; public Car(int width) { this.width = width; } public object Clone() { return new Car(this.width); } public override string ToString() { return string.Format("Width of ... Read More
The IList interface has a non-generic collection of objects that can be individually accessed by index.The following are the properties of interface IList in C# −Sr.NoProperty Name & Description1CountGets the number of elements contained in the ICollection.2isFixedSizeGets a value indicating whether the IList has a fixed size.3isReadOnlyGets a value indicating whether the IList is read-only.4isSynchronizedGets a value indicating whether access to the ICollection is synchronized.5Item(Int32)Gets or sets the element at the specified index.The following are the methods of the IList interface −Sr.NoProperty Name & Description1Add(Obj)Adds an item to the IList.2Clear()Removes all items from the IList3Contains(Obj)Whether the list contains a specific ... Read More
The IStructuralComparable interface supports the structural comparison of collection objects. This interface introduced in .NET 4.The following is the syntax −public interface IStructuralComparableIt has a single method −CompareTo(Object, IComparer) − It determines whether the current collection object precedes, occurs in the same position as, or follows another object in the sort order.The compareTo() method determines whether the current collection object is less than, equal to, or greater than the second object in the sort order.Explicit implementations for the IStructuralComparable Interface is provided by −Generic tuple classes (Tuple, Tuple, Tuple,…Array class
To display numbers in the form of Triangle, firstly consider a two dimensional array.int[, ] a = new int[5, 5];For a triangle, you need to consider spaces as shown below −1 1 1 1 2 1 1 3 3 1Then loop through to set the triangle with 1s on the left and right as in the following code −Example Live Demousing System; class Demo { public static void Main() { // two dimensional array int[, ] a = new int[5, 5]; for (int i = 0; i < 5; ... Read More
With C#, you can create an array of integers, chars, etc. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type stored at contiguous memory locations. This type can be integer, char, float, etc.The following is an array declaration showing the datatype usage −datatype[] Name_of_array;Here, datatype is used to specify the type of elements in the array.[ ] specifies the rank of the array. The rank specifies the size of the array.Name_of_array − specifies the name of the array.Set the ... Read More
While declaring a method, you are not sure of the number of arguments passed as a parameter. C# param arrays (or parameter arrays) come into help at such times.This is how you can use the param −public int AddElements(params int[] arr) { }The following is the complete example −Exampleusing System; namespace Program { class ParamArray { public int AddElements(params int[] arr) { int sum = 0; foreach (int i in arr) { sum += i; } return sum; } } class Demo { static void Main(string[] args) { ParamArray app = new ParamArray(); int sum = app.AddElements(300, 250, 350, 600, 120); Console.WriteLine("The sum is: {0}", sum); Console.ReadKey(); } } }OutputThe sum is: 1620
The conditional statement requires the programmer to specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be true, and optionally, other statements to be executed if the condition is determined to be false.The following are the types of conditional statements −Sr.NoStatement & Description1if statementAn if statement consists of a boolean expression followed by one or more statements.2if...else statementAn if statement can be followed by an optional else statement, which executes when the boolean expression is false.3nested if statementsYou can use one ... Read More
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