#include <iostream> #include <vector> #include <string> using namespace std; int main() { vector<int> multiples; for (int num = 3; num <= 100; num += 3) { multiples.push_back(num); } for (size_t i = 0; i < multiples.size(); i++) { cout << multiples[i] << (i == multiples.size() - 1 ? "" : " "); }