Java sorum var!

 
  public static String ortaChar (String str) { 
  int ln = str.length(); 
  if (ln % 2 == 0 ) 
     return str.charAt((ln/2)-1) + str.charAt(ln/2); 
  else  
     return str.charAt(ln/2);  
  } 
  

 string my = "abcd"; 
      //string my = "abc"; 
       
      int l = my.length(); 
      //int l = my.length(); 
       
      if(l%2 == 0) 
          cout<<my.substr(l/2, l/2+1); 
      else 
          cout<<my.substr(l/2+1);