how do i get my program to add the numbers in a single integer, e.g 123456, so it will do 1+2+3+4+5+6 ????
Help please
This is a discussion on C++ help!!!!! Adding integers within the C++ Programming forums, part of the General Programming Boards category; how do i get my program to add the numbers in a single integer, e.g 123456, so it will do ...
how do i get my program to add the numbers in a single integer, e.g 123456, so it will do 1+2+3+4+5+6 ????
Help please
I just got my pupils dialated, so I reall'y cant see your code...if you could make it a little bigger that'd be great...
Step 1: Divide a number into its different digits
Step 2: Add them
Example: x = 1234
x % 10 = 4
x /= 10
x % 10 = 3
etc...
you can figure out how to write a loop to do this for you
First, convert it to a string. You can use sprintf(). I think some compilers have itoa() (integer to ascii), but I also think this is not ANSI standard.
Convert each character in the string to a single-character "string".
Use atio() (ascii to integer) to get the individual "numbers".
Add 'em up in a loop.
Or, you could do it mathmatically... using division to shift the numbers right into the one's position, etc. ( I haven't completely thought-out the algorithm) again adding them up in a loop.
[EDIT]
Look up "modulus" if you don't understand what ygfperson
is doing.
Last edited by DougDbug; 04-30-2003 at 06:48 PM.