How to convert numbers into text?

Question

I have been learning Objective-C with the Kochan book and I can\'t figure out how to do this exercise program. Only odd numbered exercises are listed online and this one is

Answer 1

I use nested under nested loop but believe that this works

    int i, j, number, reversenumber = 0;

    NSLog(@" Input Number:");
    scanf( "%i", &number);

    if (number != 0)
        // chekcing for zero entry
    {
        for (;number!= 0; number = number/10)
            //for reversing the number entered so that the words doesn't come reversed when printed
        {
            i = number%10;
            reversenumber = reversenumber * 10 + i;
        }

        NSLog(@"Reverser Number for the input number is %i", reversenumber);
        // mid routine check to print the reversed number

        while(reversenumber != 0)
        {
            j = reversenumber % 10;
            switch (j)
            {
                case 9:
                    NSLog(@"nine");
                    break;
                case 8:
                    NSLog(@"eight");
                    break;
                case 7:
                    NSLog(@"seven");
                    break;
                case 6:
                    NSLog(@"six");
                    break;
                case 5:
                    NSLog(@"five");
                    break;
                case 4:
                    NSLog(@"four");
                    break;
                case 3:
                    NSLog(@"three");
                    break;
                case 2:
                    NSLog(@"two");
                    break;
                case 1:
                    NSLog(@"one");
                    break;
                default:
                    NSLog(@"zero");
            }
            reversenumber /= 10;
        }

    }
    else
        NSLog(@"Zero");
}

    return 0;

}