Left Shift & Right Shift Operator in C

 X<<Y 

This means left shift x by y.

e.g 2<<1. So 2 in binary 0010 .After left shifting by 1 it becomes 0100 means 4 in decimal.

We can calculate this easily .For left shifting result will be calculated using below formula

x*2^y.

X>>Y

This means right shift x by y.

e.g 2>>1. So 2 in binary 0010 .After right shifting by 1 it becomes 0001 means 1 in decimal.

We can also calculate this easily .For right shifting result will be calculated using below formula

x/2^y.

However this formula will not work if the number is negative and if the shifting value is greater than the size of the integer.