Answer Posted / srinathsv

Suppose the 2 variables be 'a' & 'b'

Then,do the following steps

a=a-b
b=a+b
a=b-a

eg:Say a=10;b=6.The output should be a=6;b=10

a=a-b=10-6=4
b=a+b=4+6=10
a=b-a=10-4=6

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