example1_basic_usage.cpp

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
#include <iostream>
#include <set>

int main() {
    std::set<int> numbers = {5, 2, 8, 1, 9};
    
    numbers.insert(3);
    numbers.insert(1); // Duplicate, won't be inserted

    for (const auto& num : numbers) {
        std::cout << num << " ";
    }
    std::cout << std::endl;

    return 0;
}