Answer to Exercise 8 extended.

[OC2000]

I decided to add a little extra programming to reproduce the exact result as requested in the exercise i.e. The sum of 1234 is 1 + 2 +3 + 4 or 10

There maybe a simpler way to do this, but I've basically used what we've been taught up until now.

-(void) createAdditionNumber
{
 long int number, right_digit, startNumber, x,y,z,a;
   
    NSString * result = @"";
   
    NSLog(@"Enter your number.");
    scanf("%li",&number);
    startNumber = number; // stores the initial number
    z = 0;
    a=0;
   
   // main loop
   
    while (number !=0)
    {
        right_digit = number % 10;                                           
        x = right_digit;
        if (a == 0)
            a=x;
        else
            a = (a * 10) + x; // creates the reverse numer i.e. 1 x10 = 10 + 2 = 12, 12 x 10 = 120 + 3 = 123
        z+=x;
        number /= 10;
    }
   
    // loop to create string 1 + 2 + 3 + 4
    while (a !=0)
    {
        right_digit = a % 10;
        y = right_digit;
       
        if (a < 10 )
            result = [NSString stringWithFormat:@"%@ %li", result,y];
        else
            result = [NSString stringWithFormat:@"%@ %li +", result,y];
        a /= 10;
    }
    NSLog (@" The Sum of %li is %@ or %li", startNumber,result, z);
}