-----------------------------for right angle triangle pattern---------- if its changing number of pattern in every column then use printf("%d",col); else use row insted if col ... you will get the pattern of same repeting numbes like 11 then 22 then 333
------------- for binary pattern same as but use row or column % 2 ------------- for alphabetic pattern use column or row +ascii value . an dont forget to cahnge %d to %c ... cheers