Answers for "cout include 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"
}

c++ cout int

#include <iostream>

std::cout << "Hello, World!" << std::endl;