What is output & input

Answer 1

The BTS hair colouring world.
In which coding language?

Generally:
input is user input - the information provided by an external loint of the code.

output is the result of the ooeration of the code upon the input.

I hope this is not homework

Answer 2

cout << output
cin >> input

But I strongly suggest you complete the c++ tutorial to learn how to use them.

Good luck

Answer 3

C++