But the problem chromatic is this :- 
component 2 = e d
induced=3
component 1 = c b a
b c a
induced=3

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For component 2 (e d),, there shouldn't be any return value,as there is no line in data which has these vertices. Whereas for component 1(c b a), the first line of data file (b c a) should be returned.

In reply to Re^2: Problem printing return value from a subroutine by zing
in thread Problem printing return value from a subroutine by zing

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