Left Shift Operator4 months ago

**Left Shift** operator is denoted by **<<**

**<<** shifts the bits to the left by the denoted positions.

N << 1 shifts the bits in N to the left by 1 position.

Consider **9** whose binary representation is **1001**.

Now when 1001 is shifted left using << by 1, we get **10010 **(a zero is added in the end).

Decimal value of **10010** is **18.**

So the below program prints 18 as the output.

```
#include <stdio.h>
int main(){
//Binary representation of 9 is 1001
int N = 9;
/*
Now 1001 is shifted left using << by 1.
So it becomes 10010. Decimal value of 10010 is 18.
*/
printf("%d", N << 1);
}
```

**Another Example:**

Consider N=6. Binary representation of 6 is **110**. Now 110 is shifted left using << by 2 giving the value as **11000**. Decimal value of **11000** is **24**.

So the output of the program is **24**.

```
#include <stdio.h>
int main(){
//Binary representation of 6 is 110
int N = 6;
/*
Now 110 is shifted left using << by 2.
So it becomes 11000. Decimal value of 11000 is 24.
*/
printf("%d", N << 2);
}
```