Question

How to print vector elements in groups of 2 with C++

Answer 1

#include <iostream>
#include <vector>

int main() {
    std::vector<int> vec = {1, 2, 3, 4, 5, 6, 7, 8}; 

    for (size_t i = 0; i < vec.size(); i += 2) {
        std::cout << vec[i];
        if (i + 1 < vec.size()) { // Check if the next element exists
            std::cout << ", " << vec[i + 1];
        }
        std::cout << std::endl;
    }
}



/*
run:

1, 2
3, 4
5, 6
7, 8

*/

 

70+ SQL courses for beginners and professionals