#include <iostream> #include <vector> #include <algorithm> using namespace std; void add_one(int &value) { value++; } int main() { vector<int> numbers = {1, 7, 3, 5, 9, 2}; // Increase each number by one for_each(numbers.begin(), numbers.end(), add_one); // Output the modified numbers for (int number : numbers) { cout << number << " "; } return 0; }