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Hi, Below is a question on white box testing. Kindly help
me in answering it. How many test cases are needed to
obtain 100% branch coverage. This question was asked in
ISTQB foudation level exam - Dec21 2008.

Read(A,C)

If(A<10) then Print A;

Endif

If(C>100) then Print C is greater then A

else if(C<100) then print only C

Endif else

Options -
a. 4
b. 3
c. 2
d. 1

Kindly answer with explanation so that it would be easy to
understand

Answer Posted / varshab

Ans is 4 as there are two branches.For these two branches
we need to test for both true & false conditions. hence to
achieve 100% branch coverage we need to write 4 test cases.

Is This Answer Correct ?    0 Yes 3 No



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