What is wrong with this code?

Question

I have made a code for calculating the sum of the digits of an number. It takes input in a string format. But the output is not the correct sum. Please help!

https://code.sololearn.com/c2WCr12v18gm/?ref=app

Answer 1

I think a[i] (char) took assci value and not actual numeric value

Answer 2

Example
You entered 123
String "123"

Take 1 st character a[0]
i.e '1' now your code will add 1 's ascii value i.e 49 to the sum and not 1

Answer 3

https://code.sololearn.com/cRBXpifgdt5d/?ref=app

Answer 4

But I have converted the int input into a string

Answer 5

But what was the problem with my code?

Answer 6

Oh thats why when i input 123 it outputs 150

Answer 7

d = Char'.GetNumericValue(b[i]);
sum += (int)d;
Or
sum += Convert.ToInt32(Char.GetNumericValue(b[i]));