New features of C++

                                                                        This operator can be used in situations where a global variable exist with the same name as a local variable.

#include <stdio.h>

int  xyz=50;  // global variable

int main ()

{

              for(register int xyz=1;xyz<10;xyz++)

               // Here xyz is local variable

{

      printf(“%d,::xyz/xyz”); //local variable

}

returnno();

}

In this code fragment the scope resolution operator is used to address a global variable instead of the local variable with the same name.

                                  In analogy to C, C++  defines  standard input and output strums which are opened when a program is executed. The strums are ----

Syntactically these strims are not used with functions,instead,data are read from the strims or written to them using the operator <<, called the insercation and >> , called the extraction operator. The strims are declare in the header file <iostrim.h>