CO311: Building a nested for loop

/***********************************************
4_65a.cpp

print a string of numbers
***********************************************/
#include <iostream>
#include <string>
using namespace std;

void main()
    {
    for (int number = 1; number <= 10; number++)
        cout << number;
    }

12345678910

/*******************************************************
4_65b.cpp

print a string of numbers
*******************************************************/
#include <iostream>
#include <string>
using namespace std;

void main()
    {
    const int start = 1;

    cout << "Enter the last number" << endl;
    int finish;
    cin >> finish;

    for (int number = start; number <= finish; number++)
        cout << number << ' ';
    }

Enter the last number
9
1 2 3 4 5 6 7 8 9 

/***********************************************************
4_65c.cpp

print a string of numbers
***********************************************************/
#include <iostream>
#include <string>
using namespace std;

void main()
    {
    const int start = 1;

    cout << "Enter the last number: " << endl;
    int finish;
    cin >> finish;

    for (int row = start; row <= finish; row++)
        {
        cout << "row " << row << ": ";

        for (int number = start; number <= finish; number++)
            cout << number << ' ';

        cout << endl;
        }
    }

Enter the last number: 9
row 1: 1 2 3 4 5 6 7 8 9
row 2: 1 2 3 4 5 6 7 8 9
row 3: 1 2 3 4 5 6 7 8 9
row 4: 1 2 3 4 5 6 7 8 9
row 5: 1 2 3 4 5 6 7 8 9
row 6: 1 2 3 4 5 6 7 8 9
row 7: 1 2 3 4 5 6 7 8 9
row 8: 1 2 3 4 5 6 7 8 9
row 9: 1 2 3 4 5 6 7 8 9

/**********************************************************
4_65d.cpp

print a string of numbers
**********************************************************/
#include <iostream>
#include <string>
using namespace std;

void main()
    {
    const int start = 1;

    cout << "Enter the last number: ";
    int finish;
    cin >> finish;

    for (int row = finish; row >= start; row--)
        {
        cout << "row " << row << ": ";

        for (int number = start; number <= finish; number++)
            cout << number << ' ';

        cout << endl;
        }
    }

Enter the last number: 9
row 9: 1 2 3 4 5 6 7 8 9
row 8: 1 2 3 4 5 6 7 8 9
row 7: 1 2 3 4 5 6 7 8 9
row 6: 1 2 3 4 5 6 7 8 9
row 5: 1 2 3 4 5 6 7 8 9
row 4: 1 2 3 4 5 6 7 8 9
row 3: 1 2 3 4 5 6 7 8 9
row 2: 1 2 3 4 5 6 7 8 9
row 1: 1 2 3 4 5 6 7 8 9