MATLAB: Undefined function 'string' for input arguments of type 'char'?

Question

A = 'Four score and seven years ago';
str = string(A);

With version R2016a I get error:

Undefined function 'string' for input arguments of type 'char'.

How can I have two strings array without using 'string':

str(1) = 'foo';
str(2) = 'bar';

?

I need to reference the two in file_id = fopen(str(i), 'wb');

Answer 1

You can define your strings into a cell array and access them in loop.

str = {'foo' 'bar'} ;
str{1}
str{2}