Question

Hi umm can someone help me? I am currently working on a simple set operations program.

I've done all the specifications and all I need to do now is to add 'commmas' to the output

e.g.
when the user inputted (a,b)U(b,c)
the console will output (abc)

my problem there is the addition of commas in between. i tried adding commas to the printfs' themselves but when I did, the result came out like this:
(a,b,c,)

So there. Thank you in advance. :))

Answer 1

BTW, I'm using C language.

Answer 2

if( ischar( answer[index] ) && ischar( answer[index+1] )
printf( "," );