Question

‘??’ gets converted into ‘^’ if I compile mn VC++ program and run it

e.g.

sprintf( ch, "??") 

prints out

^

But if I run the same code in Turbo C/C++, there is no such problem. Why is it happening on VC++ on Windows?

Answer 1

?? alone is not a trigraph, although ??' corresponds to ^.

Perhaps you typed it here different from what you have in code and you can’t see the trailing single quote in your string because it’s too close to the closing quote.

So in code you probably have:

sprintf( ch, "??'");