When do you use <<

Question

I've seen the following:

cout << x;

Answer 1

There are two bit shift operators in C++: the left shift operator << and the right shift operator >>. These operators cause the bits in the left operand to be shifted left or right by the number of positions specified by the right operand.
example:-
int a = 5; // binary: 101
int b = a << 3; // binary: 101000,or 40 in decimal
int c = b >> 3; // binary: 101, or back to 5 like we started with

When you left shift a value x by y bits (x << y), the leftmost y bits in x are lost, literally shifted out of existence. We’ll do this example with char values (which are integers in the range 0-255, and take up 8 bits of memory):

char a = 5; // binary (all 8 bits): 00000101
char b = a << 7; // binary:
and it is also used as insertion operator which use to insert value and it is also used with cout to print the value at console ex:-
int a, b;
a=5;
b=++a;
cout<<b // it will print the value of b which is 6 after increment by 1 as instructions are made in program

Answer 2

From the little I know about c++ you use << when using cout to output and >> we
hen using cin to accept input

Answer 3

when you begin the sentence