Help writing/reading character-base files, Bowler's score

[sentinelfire]

I dont know anything about bowling.I have to write four functions findpattern, countrange, validset and classify.
findpattern will receive three scores
countranges will receive the three scores exatly 300, 200-299 range, 100-199 range, 0-99 range.
validset receive the three scores less thean zero or over 300 is invalid, the function will return 1 if three numbers are in the range from 0 to 300 and zero if else.
classify will receive three numunbers. This function will call the first two functions to classify the three numbers example;
the 3 values are: -60 30 360
-60 is invalid
360 is invalid
the group is invalid