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CS201-42 - Introduction to Programming Lecture 42...

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Unformatted text preview: Introduction to Programming Lecture 42 template <class T> Template Classes Stack Last In First Out template <class T> class ClassName class ClassName { definition } Member function template <class T> Class_Name <T> :: Function_Name (Arguments) { // body of function } Class_Name :: Function_Name ( Arguments ) { // body of function } Example template <class T> class Number { private : T MyNumber ; public: Number ( T n ) ; display ( ) ; } Example Number <int> x ; Number <double> y ; Non Type Parameters template <class T , int elements> int x [ 100 ] ; Static Member Variables Number <int> x ; class PhoneCall { private : int lengthOfCall ; char billCode ; public : PhoneCall ( const int i , char b ) ; PhoneCall ( PoneCall & p ) ; PhoneCall PhoneCall :: operator ­ ( void ) ; void display ( void ) ; } ; Example Example PhoneCall PhoneCall :: operator ­( void ) { PhoneCall temp ( * this ) ; temp.billCode = 'C' ; return ( temp ) ; } Friend Function a + 2 ; ‘a’ is a object of a class 2 is an integer value a + 2 ; should be same as 2 + a ; friend f ( ) ; friend f ( x <T> & ) ; friend f ( X <int> & ) ; friend class Y ; friend A :: f ( ) ; friend A :: f ( X< T > & ) template <class T> class Stack { private : int size ; T array [ ] ; public : Stack ( ) ; void push ( T ) ; T pop ( ) ; bool isEmpty ( ) ; bool isFull ( ) ; // Etc. } ; Example Example Stack <int> x ; Stack <double> x ; Last In First Out Queue Link List First In First Out Standard Template Library STL ...
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