changing vfork with fork gives the correct output but in case of vfork the
loop behaviour is unpredictable
@harit : I guess the child is simply reading the value of i from the same
data area of the parent.
First time it showed a garbage, after which it shows the value
inputted in the parent.
If i am not wrong the child uses text and data area of parent till a exec is
not been called in the child.
Here in the program parent and child are not doing any tweak with the text
area then how can we explain the loop behaviour of the program.
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