Converting String to Int

[theonealone]

Hey guys ,

Just wondering if there is any method to convert a string to an int.

Like convert "hello" into int or double.

The thing i want to do is to check for spaces new lines and other punctuations within a text file.

Thanks in advance.

[Zhuge]

Well...you could convert a 'numerical' string to an integer, but I have no idea how you would convert something like "hello" to a number of any sort.

[kfmfe04]

theonealone wrote:

The thing i want to do is to check for spaces new lines and other punctuations within a text file.

loop through each character in the string, and call isalnum() on each character

http://www.cplusplus.com/reference/clibrary/cctype/isalnum/

or, write your own bool is_a_char_that_i_want(char c) function

[theonealone]

Thanks alot. I shall try and implement that strategy.

[theonealone]

will this also work for white spaces and newlines ??

[kennedywai]

Using by atoi(string) function to achieve it