What will be the output of the following code fragment? void main() printf("%x",-1<<4);

Answer: Option A

-1 will be represented in binary form as:
1111 1111 1111 1111

Now -1<<4 means 1 is Shifted towards left by 4 positions, hence it becomes:
1111 1111 1111 0000 in hexadecimal form - fff0.