How to swap two numbers without using third variable | C program | swapping without third variable

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In this video we will learn how to swap two numbers without using third variable.

Q. A = 20 and B = 40 perform swapping between A and B without using thrid variable.

Logic :-

A = A + B;

B = A – B;

A = A – B;

Answer :-

Now, we put values of a and b in above logic.

A = 20 + 40 = 60

B = 60 – 40 = 20

A = 60 – 20 = 40

after performing above operation values will be,

A = 40

B = 20

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Swapping between two numbers without using third variable C program
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[hievery]

Wait until sum of numbers will overflow int range.
Should have used xor instead