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GATE | GATE CS 2010 | Question 44

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  • Last Updated : 28 Jun, 2021

The following program is to be tested for statement coverage:

  if (a== b) {S1; exit;}
  else if (c== d) {S2;]
       else {S3; exit;}

The test cases T1, T2, T3 and T4 given below are expressed in terms of the properties satisfied by the values of variables a, b, c and d. The exact values are not given.

T1 : a, b, c and d are all equal
T2 : a, b, c and d are all distinct
T3 : a = b and c != d
T4 : a != b and c = d
Which of the test suites given below ensures coverage of statements S1, S2, S3 and S4?
(A) T1, T2, T3
(B) T2, T4
(C) T3, T4
(D) T1, T2, T4

Answer: (D)


T1 checks S1 

T2 checks S3

T4 checks S2 and S4

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