# Which of the following does the choice rule not allow you to do? Take any pre-condition of the if...

###### Question:

Hey, could someone help me check my answers with these please :) Thank you

Which of the following does the choice rule not allow you to do? Take any pre-condition of the if: construction as a pre-condition of the if: and else: blocks Take the condition of the if statement a a pre-condition of the if: block Take (P) as a post-condition of the whole if: construction if (Py is a post-condition of both the if: and else: blocks Take the condition of the if statement as a pre-condition of the else: block
In order to use a the loop rule, we must idendify some assertion (P) which: is independent of the truth of the condition in the while: statement is a pre-condition of the loop and an invariant of the body of the loop is a pre-condition of the loop. is an invariant of the body of the loop.
The predicate x 2 0 is: not suitable for use as a loop invariant an invariant of the block of code, given y 2 0 an invariant of the block of code not an invariant of the block of code

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