C# How do I get the sum of all digits in a string, that is too long to convert into an integer?

Question

I have a string that consists of 11 digits(might be more or less at another time). This is too long to convert into an integer so I don't know how to get the sum of the digits.

I have tried:

string numberString = "84610467228";
int sumNumbers = 0;

for (int i = 0; i < numberString.Length; i++) {
   sumNumbers = sumNumbers + numberString[i];
}

But this doesn't work because numberString[i] is a char and not an integer.

What I wanted to do, by converting the string into an integer was:

string numberString = "84610467228";
int number = int.Parse(numberString);
int sumNumbers = 0;

for (int i = 0; i < numberString.Length; i++) {
   sumNumbers = sumNumbers + number%10;
   number = number / 10;
}

But the string is too long to convert into an integer. Is there a way of converting a long string into an integer or is there another way to solve this?

Just convert char to int with int.Parse in your first approach. — Evk, Oct 27 '20 at 11:03
A loop isn't necessary either; LINQ makes this as compact as `numberString.Sum(c => c - '0')`. — Jeroen Mostert, Oct 27 '20 at 11:13

score 0 · Answer 1 · answered Oct 27 '20 at 11:08

0

may be you should use long or decimal or double instead, and you can use long.parse("Your sting") to change string into long or for any other types you can use parse function.

answered Oct 27 '20 at 11:08

Asieh hojatoleslami

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2

Recommend using `tryparse` then `parse` – Luminous_Dev Oct 27 '20 at 11:09

C# How do I get the sum of all digits in a string, that is too long to convert into an integer?

1 Answers1