Spoken Tutorials - Linux AWK Assignment 
						Funded by the National Mission on Education through ICT
							 Indian Institute of Technology Bombay,
								http://spoken-tutorial.org
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Conditional statements in awk

Using the awkdemo.txt file available in the code files link of this tutorial, give grades according to the rules:

1. If mark is greater than equal to 90, grade will be A.
2. If mark is greater than equal to 80 but less than 90, grade will be B.
3. If mark is greater than equal to 70 but less than 80, grade will be C.
4. If mark is greater than equal to 60 but less than 70, grade will be D.
5. Otherwise grade will be F.