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CS405 Parallel Processing: Practical 1

A program is required to process text read from a file and transform it according to the following rules:

1. Consecutive multiple space characters are to be replaced by one space
2. Each equals sign '=' should be replaced by the word "equal"
3. Each question mark '?' should be replaced by an exclamation mark '!'

For example the following input:

"Excuse me!"    he shouted  "does   truth =  beauty?"

results in the following output:

"Excuse me!" he shouted "does truth equal beauty!"

You should write two versions of the program in Modula-2, one using co-routines, the other time-slicing. Both should use two separate processes, one to handle input and the other output . The amount of data communicated between processes should be kept to a minimum. You should test both programs thoroughly.

Hand in

• two program listings
• print outs of inputs and outputs showing your programs being tested thoroughly.

DUE TO BE HANDED IN ON TUESDAY 3rd FEBRUARY 1998. (ABSOLUTELY NO EXTENSIONS)