multimap size() function in C++ STL
The multimap::size() is a built-in function in C++ STL which returns the number of elements in the multimap container.
Syntax:
multimap_name.size()
Parameters: The function does not accept any parameter.
Return Value: This function returns the number of elements a multimap container has.
CPP
// C++ function for illustration // multimap::size() function #include <bits/stdc++.h> using namespace std; int main() { // initialize container multimap< int , int > mp; // insert elements in random order mp.insert({ 2, 30 }); mp.insert({ 1, 40 }); mp.insert({ 2, 60 }); mp.insert({ 2, 20 }); mp.insert({ 1, 50 }); mp.insert({ 4, 50 }); cout << "multimap mp has " << mp.size() << " number of elements" ; return 0; } |
Output:
multimap mp has 6 number of elements
Time Complexity: O(1)
Contact Us