C -stilus:
 printf("Hajra Fradi!");
 scanf("%d",&i);
   I
   I
   V
  stdio.h (standard I/O lib.)

C++ -stilus (OOP)
       (-> iostream.h)

cout <<"Hajra Fradi!" <<d <<"Haliho\n";
 (pl. 2 +3 +1...)

-----

Pelda1:
  #include <stdio.h> 
    int main (int argc, char *argv[])
    { printf("Hajra' Fradi!");
     return 0; }

Pelda2:

  #include <iostream.h>
   int main(int argc, char *argv[])
   { cout << "Hajrá Fradi!";
     return 0; }