Question

How to add an int array to unordered_set in C++

Answer 1

#include <iostream>
#include <unordered_set>
  
void print(std::unordered_set<int> const &us) {
    for (auto const &n: us) {
        std::cout << n << " ";
    }
}
    
int main()
{
    int arr[] = {4, 6, 7, 0, 14, 80, 21, 99};
    int size = sizeof(arr) / sizeof(arr[0]);
     
    std::unordered_set<int> us;
     
    for (size_t i = 0; i < size; i++) {
        us.insert(arr[i]);
    }
       
    print(us);
}
    
   
   
   
   
/*
run:
    
99 21 80 14 0 7 6 4 
    
*/

 

 

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