forIan.cpp

#include <iostream>
#include <string>

using std::cout;
using std::endl;
using std::string;

int main() {
  string var1 = "butt";
  string var2 = "soap";
  string var3 = "orcs";
  string var4 = "cyanide";
    
  // The endl method is more C++, and is better to be in the habit of. 
  // Without 'end', all of this would be on one line.
  cout << "Ian smells like " << var1 << endl 
    << " but Iris smells like " << var2 << endl
    << " but that's okay because neither of them smell like " << var3
    << " and don't get me started on emus, which remind me of " << var4;
  
  // But this works almost the same
   cout << "Ian smells like " << var1 << "\n" 
    << " but Iris smells like " << var2 << "\n"
    << " but that's okay because neither of them smell like " << "\n"
    << " and don't get me started on emus, which remind me of " << var4 << "\n";
    
  /* The difference is that 'endl' flushes the output buffer, meaning
   * the text will be displayed RIGHT NOW, whereas \n will only display
   * the text after the output buffer is flushed, over which you have little
   * control. This can be a pain if you're using output buffer to debug, and 
   * the messages are delayed and you don't actually know where your program is breaking.
   */
}