Removing an element by its value

In this approach, we will delete an element from a set by providing its value in erase() function.

Example:

C++

// C++ program to remove 
// an element from set 
// Removing an element by its value 
#include <bits/stdc++.h> 
  
using namespace std; 
  
int main() 
{ 
    set<int> s; 
  
    // Inserting values in set 
    s.insert(10); 
    s.insert(20); 
    s.insert(30); 
    s.insert(40); 
    s.insert(50); 
  
    // Original set 
    cout << "Original set : "; 
  
    for (auto i : s) { 
        cout << i << " "; 
    } 
  
    cout << endl; 
  
    // Removing element 
    s.erase(40); 
  
    // Set after Removing 
    // an element 
    cout << "Set after removing an element : "; 
  
    for (auto i : s) { 
        cout << i << " "; 
    } 
  
    return 0; 
}

Output

Original set : 10 20 30 40 50 
Set after removing an element : 10 20 30 50

Different Ways to Remove an Element From Set in C++ STL

Prerequisite: Set in C++

There are multiple ways to remove an element from the set. These are as follows:

Removing an element by its value
Removing an element by its index
Removing an element by an iterator

Example:

Input set s={10, 20, 30, 40, 50} , value=40

// Removing 40 from the set

Output set s={10, 20, 30, 50}

Tags:

#cpp-set #STL #Technical Scripter 2022 #C++ #Technical Scripter #CPP #STL

2. Removing an element by its index

Removing an element by its value

C++

Different Ways to Remove an Element From Set in C++ STL

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