select from string?

[oiuuhjoi]

i have string like #456,123 and want to select (4)[as the second digit not more] to add it with other no.
what shall i do?

[nyc_(is_out_of_here)]

This is an extremely basic task for LabVIEW.

Have you even gone through the tutorials????

http://www.ni.com/academic/students/learnlabview/

[oiuuhjoi]

how i can do it 

Spoiler

[SteveChandler · Accepted solution]

Do what? What do you mean by "add it with the other no"? Do you mean you want to mathematically add the 4 and the 5 to get 9 or perform string concatenation to get '45'? Do you want to add the 4 and the 56,123?

To select a subset of a string you can use the String Subset function. There is a zero based index input and a length. Index 0 would be the # and index 1 is the 4. There is also a length input which defaults to the rest of the string. Wire a 1 to that.

[Mark_Yedinak]

You a regular expression. The expression "#(\d)" would isolate the first digit after the pound sign.