multimap::count() in C++ STL
The multimap::count is a built-in function in C++ STL which returns the number of times a key is present in the multimap container.
Syntax:
multimap_name.count(key)
Parameters: The function accepts one mandatory parameter key which specifies the key whose count in multimap container is to be returned.
Return Value: The function returns the number of times a key is present in the multimap container.
// C++ function for illustration // multimap::count() 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 }); // count the number of times // 1 is there in the multimap cout << "1 exists " << mp.count(1) << " times in the multimap\n" ; // count the number of times // 2 is there in the multimap cout << "2 exists " << mp.count(2) << " times in the multimap\n" ; return 0; } |
Output:
1 exists 2 times in the multimap 2 exists 3 times in the multimap
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