How can i count numbers on odd/even places?

[cowa]

Hello Everyone!
I want to count the sum of digits in odd places and in even places , and after that their difference
we know that first digit it's from the right side

How can I do it with switch?
For example :

A number 23543 :

sum of digits in even places:7 (3+4=7 even places)
sum of digits in odd places:10 ( 2+5+3=10 odd places)
difference: -3 (7-10)

Thank's!!!

[Reegan]

When you scanf() you leave the '\n' on the buffer. Thus, when you call getchar() you get the newline and don't let the user enter something. Your printf() calls need to have a format pattern in the message text. You don't use the "Enter E or e" to quit. The program quits anyhow. You might want to put a while(ch != 'e' || ch != 'E') in your program.