binary_search function demo.cpp

// 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;
}