Q. A program converts student marks that are input as marks out of 100 to letter grades following the rules below.
A mark of at least 90 earns A+
A mark of at least 80 earns A
A mark of at least 70 earns B
A mark of at least 60 earns C
A mark of at least 50 earns D
A mark below 50 means F (Failure)
Note: Numeric marks are recorded accurate to one decimal point (0.1) and should be rounded up to the nearest whole number by the grading program.
The objective of testing is to ensure that students are assigned the correct letter grade, given their numeric mark.
a. Draw the table to show equivalence partitions and boundary values that ensure all input values are tested
b. How many test cases do you think are required for complete coverage? and why? (How many tests do you think are needed for each partition)
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