Question

I’m trying to figure out how to get a string from an array starting at some given position. Say we have an array that’s arbitrarily long and my string starts at location 1000. If I wanted to get a string from a file I would simply use something like getc or scanf or something. How do I carry out these same functions on an array instead of a file?

*oh, keep in mind that the array is of type int and is full of numerical representations of ASCII characters.

Answer 1

Assuming the string is null terminated (you don’t specify how you know the end of the string) then a bit of Linq should do the trick:

var chars = ints.Skip(1000).TakeWhile(i => i != 0).Select(i => (char)i);
var str = new string(chars.ToArray());

The first like skips 1000 ints, takes them while they’re not a null-terminator, and then converts them to a char as appropriate for ints representing ASCII codes. The second line simply makes them into a string.

If the string has no null terminator, and just ends when the array ends, then just remove the call to TakeWhile.