triangle of numbers non-consecutive function

l04e01.trianglenum.cpp

// l04e01.trianglenum.cpp
// juanfc 2024-10-23
// 
//
// \Ej Build a procedure that receives from the main() program the height of the next numerical triangle and prints it:
// Height? 11

//            1
//           232
//          34543
//         4567654
//        567898765
//       67890109876
//      7890123210987
//     890123454321098
//    90123456765432109
//   0123456789876543210
//  123456789010987654321

// HINT To avoid more than one digit outputs, print n % 10 Start n in 1.

#include <iostream>
using namespace std;

int main()
{
    void tri(int h);
    tri(11);
    return 0;
}

void tri(int h)
{
    for (int lin = 1; lin <= h; ++lin) {
        for (int i = 0; i < h-lin; ++i)
            cout << ' ';
        for (int i = lin; i < 2*lin-1; ++i)
            cout << i % 10;
        for (int i = 2*lin-1; i >= lin; --i)
            cout << i % 10;
        cout << endl;
    }
}