multiset size() in C++ STL with Examples
Last Updated :
23 Jul, 2018
The multiset::size() is a built-in function in C++ STL which returns the number of elements in the multiset container.
Syntax:
multiset_name.size()
Parameters: The function does not accept any parameters.
Return Value: The function returns the number of elements in the multiset container.
Below programs illustrate the above function:
Program 1:
#include <bits/stdc++.h>
using namespace std;
int main()
{
multiset< int > s;
s.insert(10);
s.insert(13);
cout << "The size of multiset: " << s.size();
s.insert(13);
s.insert(25);
cout << "\nThe size of multiset: " << s.size();
s.insert(24);
cout << "\nThe size of multiset: " << s.size();
return 0;
}
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Output:
The size of multiset: 2
The size of multiset: 4
The size of multiset: 5
Program 2:
#include <bits/stdc++.h>
using namespace std;
int main()
{
multiset< int > s;
cout << "The size of multiset: " << s.size();
s.insert(2);
s.insert(3);
cout << "\nThe size of multiset: " << s.size();
s.insert(4);
cout << "\nThe size of multiset: " << s.size();
return 0;
}
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Output:
The size of multiset: 0
The size of multiset: 2
The size of multiset: 3
All functions of std::multiset
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