DECLARATIONS AS STATEMENTS

NOTE : -
THIS CONTENT IS NOT ORIGINAL

DECLARATIONS AS STATEMENTS

In a C++ program, a declaration can be placed wherever a statement can appear, which can be anywhere within a program block. Any initializations are done each time their declaration statement is executed. Suppose we are searching a linked list for a certain key:

int IsMember (const int key) {         int found = 0;         if (NotEmpty())          {                  List* ptr = head;                 // Declaration                   while (ptr && !found)                  {                          int item = ptr->data;                         // Declaration                           ptr = ptr->next;                                                  if (item == key)                                  found = 1;                 }          }          return found; } 

By putting declarations closer to where the variables are used, you write more legible code.

BIBILOGRAPHY / REFERENCE : - http://www.acm.org/crossroads/xrds1-1/ovp.html