Simple, combines two files in the following pattern:

File 1:
KEY DEF


File2:
KEY DEF2


Output
KEY DEF DEF2


Only lines with the same keys will be merged. You can see sample inputs and output in the upload. All separations are TABS!

Again, don't expect a beautiful code, did it in class and took me like 10 minutes.. :Psmiley:

http://www.mediafire.com/?t612s77k4tlrd4b