Splitting A String into variables

I want to convert a string into an array that holds the individual characters of the string. for example, if I have:

a=input('enter calc: ','s');

And I enter 1+1

Is there a method to store the values as individual characters in an array, such as

char[1]='1';
char[2]='2';
char[3]='3';

Answer 1

[Steven Lord]

The code you posted already does this.

>> a=input('enter calc: ','s')
enter calc: 1+1

a =

    '1+1'

>> a(1)
ans =

    '1'

>> a(2)
ans =

    '+'

[Elliot Alderson]

Thank you for the clarification.