1st.: I have got a dev c++ 4.9.9.2 IDE. If I replace it with another one, it's sure that the new one will be able to run my sourcecodes?

2nd: I could see in a thread, that somebody has the same IDE and has the same problem with the wcout (?class), namly dev don't know it, nor can be used wchar_t type.
He advised that download STLport's library. I've done so. But readme after readme I have to admit that it too complicate to me. I would have to compile the header files, and matters what kind of IDE you have, that is, it is not a simply plugin or patch file. I'm stuck.
Once I will try out.

3rd:So I hesitate between Code:Blocks and Eclipse.

Though it isn't the most importont wchar_t type yet, but I noticed that dev since 2005 hasn't been updated. Bloodshed Software - Providing Free Software to the internet community