Tricky if... else

Q.1>>Think about the output:

void main()

{

int x=100;

if(!!x)

printf("x=%d",x);

else

printf("x=%d",x);

}

which printf() do you find in the output?

ANS:

which ever printf() will execute, the o/p is same in both the cases.

But the main thing is to know about the (!!x) condition inside the if().

1st "!x" will make the value 0 which is assigned 100 that is 1 for a if statement.

The 2nd "!" will make it to 1 again.

so, the if() will be execute; not the else one.

But, remember the value of x will not change to 1 as it was changed in a condition statement.Its value remain 100.