Description :
This method is used to know if value exits in a set. It returns 1 if the value is a element of set, otherwise 0. It is mostly used in conditional statements.
Example :
//Run Code To Demonstrate use of set.count()
#include<iostream>
#include<set>
int main() {
// Create a set object holding integers
std::set<int> mySet {1,2,3,4,-5};
if (mySet.count(1) != 0) {
std::cout << "1 : is not an element of myset" << std::endl;
}
else {
std::cout << "1 : is a element of mySet" << std::endl;
}
if (mySet.count(12) != 0) {
std::cout << "12 : is not an element of myset" << std::endl;
}
else {
std::cout << "12 : is a element of mySet" << std::endl;
}
return 0;
}