binary search in set c++
// C++ code to demonstrate the working of binary_search()
#include<bits/stdc++.h>
using namespace std;
int main()
{
// initializing vector of integers
vector<int> arr = {10, 15, 20, 25, 30, 35};
// using binary_search to check if 15 exists
if (binary_search(arr.begin(), arr.end(), 15))
cout << "15 exists in vector";
else
cout << "15 does not exist";
cout << endl;
// using binary_search to check if 23 exists
if (binary_search(arr.begin(), arr.end(), 23))
cout << "23 exists in vector";
else
cout << "23 does not exist";
cout << endl;
}