print continous counter

08.triangleContDigits.cpp

// 08.triangleContDigits.cpp
// juanfc 2024-10-07
// 

#include <iostream>
using namespace std;

int main()
{
    int gCounter = 1;
    int n = 12; // or cin >> n;

    for (int line = 1; line <= n; ++line) {
        for (int i = 0; i < line; ++i)
            cout << gCounter++ % 10;
        cout << endl;
    }

    return 0;
}