Size of unordered_set

// C++ program to illustrate the 
// unordered_set.size() function 
#include <iostream>
#include <unordered_set>
  
using namespace std;
  
int main()
{
  
    unordered_set<int> arr1 = { 1, 2, 3, 4, 5 };
  
    // prints the size of arr1
    cout << "size of arr1:" << arr1.size();
  
    // prints the element
    cout << "\nThe elements are: ";
    for (auto it = arr1.begin(); it != arr1.end(); it++)
        cout << *it << " ";
  
    return 0;
}

Source: geeksforgeeks.org

Size of unordered_set

// C++ program to illustrate the
// unordered_set::size() function
// when container is empty
#include <iostream>
#include <unordered_set>
  
using namespace std;
  
int main()
{
  
    unordered_set<int> arr2 = {};
  
    // prints the size
    cout << "Size of arr2 : " << arr2.size();
  
    return 0;
}

Source: geeksforgeeks.org

Similar codes

0 vote226 views1 answer
Mkdir boost filesystem
C++
1 vote223 views1 answer
Print all file names in directory cpp
C++
7 votes237 views5 answers
Sleep c++
C++
0 vote265 views1 answer
Foo foo little dogs
C++
0 vote201 views1 answer
Javascript if else exercises
C++
0 vote207 views7 answers
C++ convert to assembly language
C++
1 vote209 views1 answer
Memcpy c++ usage
C++
1 vote225 views1 answer
C++ accessing parent class functinons
C++
0 vote219 views1 answer
Xor in c++
C++
0 vote211 views1 answer
Run c++ program in mac terminal
C++