Question

How to insert an element in a set with C++

Answer 1

#include <iostream>
#include <set>

int main() {
    std::set<int> mySet;

    // Insert elements into the set
    mySet.insert(10);
    mySet.insert(20);
    mySet.insert(30);

    // Attempt to insert a duplicate (will be ignored)
    mySet.insert(20);

    // Display the elements
    std::cout << "Set elements: ";
    for (int elem : mySet) {
        std::cout << elem << " ";
    }
}

  
   
/*
run:
  
Set elements: 10 20 30 

*/

 

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