cout (출력)

#include <iostream>

using namespace std;

int main()
{

 cout << "a" << endl;                                          // a
 cout << 'a' << endl;                                          // a

 cout<< "1 : " << 1 << endl;                                 // 1 : 1
 cout<< "'a' : " << 'a' << endl;                            // 'a' : a
 cout<< "a : " << a << endl;                                // Error

 cout<< " "string" : " << "string" <<endl;                // Error
 cout << " \"string\" : " << "string" <<endl;         // "string" : string

 return 0;

}