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 vote114 views2 answers
C ++ splitlines
C++
0 vote133 views1 answer
Libc++abi.dylib: terminating with uncaught exception of type std::invalid_argument: stoi: no conversion
C++
3 votes147 views3 answers
Get first element of set c++
C++
0 vote125 views1 answer
Print all even number using for loop c++
C++
0 vote143 views2 answers
Qpushbutton clicked connect c++
C++
18 votes122 views5 answers
Bold text latex
C++
0 vote131 views1 answer
Extra parameter in comparator function for sort
C++
9 votes134 views4 answers
C++ vector print
C++
2 votes114 views1 answer
Get type of an object c++
C++
0 vote122 views1 answer
Concatenate string along with the size of the word. in c++
C++