Removing the object from the top of the Stack in C# ❤️

Stack<T>.Pop Method is used to remove and returns the object at the top of the Stack<T>. This method comes under the System.Collections.Generic namespace.

Syntax:

public T Pop ();

Return Value: It returns the Object which is to be removed from the top of the Stack.

Exception : This method will give InvalidOperationException if the Stack<T> is empty.

Below programs illustrate the use of the above-discussed method:

Example 1:

// C# Program to illustrate the 
// use of Stack<T>.Pop() Method 
using System; 
using System.Collections.Generic; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // Creating a Stack of Strings 
        Stack<string> myStack = new Stack<string>(); 
  
        // Inserting the elements into the Stack 
        myStack.Push("Beginner"); 
        myStack.Push("Beginner Classes"); 
        myStack.Push("Noida"); 
        myStack.Push("Data Structures"); 
        myStack.Push("w3wiki"); 
  
        Console.WriteLine("Number of elements in the Stack: {0}", 
                                                 myStack.Count); 
  
        // Retrieveing top element of Stack 
        Console.Write("Top element of Stack is: "); 
        Console.Write(myStack.Pop()); 
  
        // printing the no of Stack element 
        // after Pop operation 
        Console.WriteLine("\nNumber of elements in the Stack: {0}", 
                                                    myStack.Count); 
    } 
} 

Output:

Number of elements in the Stack: 5
Top element of Stack is: w3wiki
Number of elements in the Stack: 4

Example 2:

// C# Program to illustrate the 
// use of Stack<T>.Pop() Method 
using System; 
using System.Collections.Generic; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // Creating a Stack of integers 
        Stack<int> myStack = new Stack<int>(); 
  
        // Inserting the elements into the Stack 
        myStack.Push(7); 
        myStack.Push(9); 
  
        Console.WriteLine("Number of elements in the Stack: {0}", 
                                                  myStack.Count); 
  
        // Retrieveing top element of Stack 
        Console.Write("Top element of Stack is: "); 
        Console.Write(myStack.Pop()); 
  
        // printing the no of Stack element 
        // after Pop operation 
        Console.WriteLine("\nNumber of elements in the Stack: {0}", 
                                                    myStack.Count); 
    } 
} 

Output:

Number of elements in the Stack: 2
Top element of Stack is: 9
Number of elements in the Stack: 1

Reference:

https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.stack-1.pop?view=netframework-4.7.2

Removing the object from the top of the Stack in C#

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