Answers for "what is cout in C++"

std cout c++

#include <iostream>
using std::cout;
int main()
{ 
  	cout<<"Hello world";
    return 0;
}

c++ output

#include <iostream>

int main(){
  std::cout << "Hello World!" << std::endl; // prints "Hello World"
}

cout c++

// It prints output on the screen
std::cout << "C++ Programming" << endl;

cout in c++

The cout object in C++ is an object of class ostream.