How to save a filename that is part user input and part text?

I'm having trouble figuring out how to save a filename that is part user input and part variable?

For example:

a = input('Please enter a filename: ', 's');

x = 1+1;

y = 2-0;

save(a??, 'x', '-ASCII');

save(a??, 'y', '-ASCII');

Let's say user filename is math

I want to save two different ascii files with a similar name as math, but be able to distinguish the two.

for example, I want to save them as:

mathadd

mathsub

How would I go about doing this with the save function? Is it even possible? Thanks.

Answer 1

[Honglei Chen]

save(sprintf('%sadd',a),'x','-ascii')

[Anthony Nguyen]

Thanks!