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Thank you so much for your help. I have another question...lets say in same program i have the input file
31 2.34
62 1.55
60 3.25
333 3.33
38 3.90
-1 // -1 seperates two kind of inputs. Next...

Ok what i'm trying to do in this program is first create an empty binary file of size 31 records. Records includes studid & gpa. and then I insert valid record into the binary file with h(k) = key%...