funcion principal
#include <iostream>
using namespace std;

int main() {
  cout << "Hello World!";
  return 0;
}
std
#include <iostream>

int main() {
  std::cout << "Hello World!";
  return 0;
}
output
int main() {
  cout << "Hello World!";
  cout << "I am learning C++";
  return 0;
}
line
int main() {
  cout << "Hello World! \n";
  cout << "I am learning C++";
  return 0;
}
endl salto de linea
int main() {
  cout << "Hello World!" << endl;
  cout << "I am learning C++";
  return 0;
}
int
int myNum = 15;
cout << myNum;
int myNum = 15;  // myNum is 15
myNum = 10;  // Now myNum is 10
cout << myNum;
int 11
int x = 5;
int y = 6;
int sum = x + y;
cout << sum;
multiples variables
int x = 5, y = 6, z = 50;
cout << x + y + z;