Description : This method is used to return the size of set. The return type is size_t (quite similar to unsigned integer), which overflows when a bigger number is subtracted from it.
Example :
//Run Code To Demonstrate use of set.size()
#include<iostream>
#include<set>
int main(){
// Create a set object holding integers
std::set<int> mySet {1,2,3,4,-5};
std::cout << "Size of my set is : " << mySet.size() << std::endl;
return 0;
}