LEFT SHIFT OPERATOR (<<)
The left shift operator shifts the data in left direction by a specified number of bits. New bits coming in from the right are zeros.
Shifting left by n places is the same as multiplying by 2^n. Moreover, Shifting is faster than multiplication.
For instance, i = j << 2 i.e. Multiply j by 4 (2^2)
PROGRAM
//Program to perform Left Shift Operation
#include <iostream>
using namespace std;
int main()
{
int x,res;
cout<<"ENTER X: ";
cin>>x;
res = x<<1; //res=x*(2^1)
cout<<x<<" * 2= "<<res<<endl ;
res = x<<2; //res=x*(2^2)
cout<<x<<" * 4= "<<res<<endl ;
res = x<<3; //res=x*(2^3)
cout<<x<<" * 8= "<<res<<endl ;
res = x<<4; //res=x*(2^4)
cout<<x<<" * 16= "<<res<<endl ;
return 0;
}
OUTPUT
