Question

can any one answer this question

Answer 1

Answer:

Let's see a simple c example to swap two numbers without using third variable.

#include<stdio.h>

int main()

{

int a=10, b=20;

printf("Before swap a=%d b=%d",a,b);

a=a+b;//a=30 (10+20)

b=a-b;//b=10 (30-20)

a=a-b;//a=20 (30-10)

Answer 2

Answer:

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