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storage class

  Storage Classes are used to describe the features of a variable/function. These features basically include the scope, visibility and life-time which help us to trace the existence of a particular variable during the runtime of a program.  C++ uses 5 storage classes, namely: auto register extern static mutable 1. auto:                                                   ========= The auto keyword provides type inference capabilities, using which automatic deduction of the data type of an expression in a programming language can be done. It is the default storage class for all local variables. The auto keyword is applied to all local variables automatically. {    auto int y;   float y = 3.45;   }   The above example defines two variables with a same storage class, auto can only be used within functions. 2.regist...
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list

 Lists are sequence containers that allow non-contiguous memory allocation.  As compared to vector, list has slow traversal, but once a position has been found, insertion and deletion are quick. Normally, when we say a List, we talk about doubly linked list.  For implementing a singly linked list, we use forward list. ----------------- #include <iostream>  #include <list>  #include <iterator>  using namespace std;  //function for printing the elements in a list  void showlist(list <int> g)  {  list <int> :: iterator it;  for(it = g.begin(); it != g.end(); ++it)  cout << '\t' << *it;  cout << '\n';  }  int main()  {  list <int> gqlist1, gqlist2;  for (int i = 0; i < 10; ++i)  {  gqlist1.push_back(i * 2);  gqlist2.push_front(i * 3);  }  cout << "\nList 1 (gqlist1) is : ";  showlist(...
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