CareerCup

int a = 10;
        int b = 20;
        int c = b;
        a = (a ==(b=(a^b)^b))?c:c;

int a=1,b=2;
int c;
((c=a)?(a=b)&&(b=c):(a=b)&&(b=c));
cout<<a<<endl<<b<<endl;

#define yourfavouritenumber 14
#define yourmosthatednumber 30  

(y=(x=(y=x^y)^x)^y ) ? yourfavouritenumber  : yourmosthatednumber ;

And fix any bugs found :)

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

main()
{
        int a=5,b=6;
        (a=a^b)?((b=b^a)?(a=a^b):printf("wtf2")):printf("wtf1");
        printf("%d %d\n", b, a);
}

int a = 10;
		int b = 20;

		int c = b;

		a = (a == (b = a)) ? c : b;