multiset max_size() in C++ STL
Last Updated :
06 Sep, 2019
The multiset::max_size() is an observer function in C++ STL which returns the maximum number of elements a container can hold. This limit might be due to system or library implementations. Being an observer function it does not modify the multiset in any way.
Syntax:
multiset_name.max_size()
Parameters: This function does not accept any parameters.
Return Value: This method returns a positive integer denoting the maximum number of elements the container can hold.
Note: The value returned by this function is usually the theoretical limit of the size of the container. However, at runtime, the size of the container may be limited to a value less than that returned by max_size() function due to RAM limitations.
The program below demonstrates the use of unordered_multiset::max_size()
#include <iostream>
#include <unordered_set>
using namespace std;
int main()
{
unordered_multiset< int > gfg;
unsigned int max_elements;
max_elements = gfg.max_size();
cout << "Number of elements "
<< "the multiset can hold is: "
<< max_elements << endl;
return 0;
}
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Output:
Number of elements the multiset can hold is: 4294967295
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