CareerCup

a ^= b;
b ^= a;
a ^= b;

nice ...

I am getting correct output with basic approach...the above approach is not working for me...

int main()
{
	int a = 51;
	int b = 51;

	a = a^b;
	printf("a:%d\nb:%d\n",a,b);

	b = a^b;
	printf("a:%d\nb:%d\n",a,b);

	a = a^b;
	printf("a:%d\nb:%d\n",a,b);

}

right ...thats the best one,...

The above solution would fail when both the elements are equal. The below one is safe.

a = (a==b) | a^b;
b = a^b;
a = a^b;