— They have integer representations. But still are their own data type yes

— Ok, so what should i do to transfer 's' to integer. I don't know how to implement my idea in code

— Further i should work with code by integers in matrix.

— And output is in integers

— So, which number in decimal system 's' represents?

— I got the point, thanks.

— If im not wrong, c uses ascii

— However you can write it in decimal using %d in printf easily