Question

How to check if an item exists in unordered_set with C++

Answer 1

#include <iostream>
#include <unordered_set>

int main()
{
    std::unordered_set<int> uset = { 1, 5, 2, 7, 4, 9, 12, 6, 3 };
    
    if (uset.find(888) == uset.end()) {
        std::cout << "Not Found";
    } else {
        std::cout << "Found";
    }
    
}



/*
run:

Not Found
  
*/

 

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