QBASIC is a very cool programming language, but I have never been able to use it in a contest. However, I noticed that in IOI'97 and before that QBASIC was one of the official IOI programming languages.
Have you used QBASIC in a contest? Is it a good language for contests? It would be interesting to hear your stories.
Unfortunately, it seems that neither QBASIC nor any other BASIC dialect is available on Codeforces...
However, I coded a QBASIC solution for a recent problem, and you can see it here:
DIM d&(2, 2000) m& = 1000000007 INPUT n%, k% FOR i% = 1 TO n% d&(1, i%) = 1 NEXT c% = 1 FOR i% = 1 TO k% FOR j% = 1 TO n% d&(3 - c%, j%) = 0 NEXT FOR j% = 1 TO n% FOR k% = 1 TO n% \ j% u& = d&(3 - c%, j% * k%) u& = (u& + d&(c%, j%)) MOD m& d&(3 - c%, j% * k%) = u& NEXT NEXT c% = 3 - c% NEXT s& = 0 FOR i% = 1 TO n% s& = (s& + d&(3 - c%, i%)) MOD m& NEXT PRINT s& PLAY "cccedddfeeddc"