gooooo

#include <iostream>

try it

using namespace std;

i tried

int main() {
    int firstTerm, lastTerm, commonDifference;
    cin >> firstTerm >> lastTerm >> commonDifference;

gooooo you can do it

    int currentTerm = firstTerm;
    while (currentTerm <= lastTerm) {
        cout << currentTerm << " ";
        currentTerm += commonDifference;
    }

   come on lets go!!!

cout << endl;
    return 0;
}