The 2nd Chapter C + + template technology

/*The 2nd Chapter C + + Template Technology 2.1 function template 2.2 class template 2.3 Template fully special 2.4 function template overloading 2.5 class template Inheritance 2.6 Chapter Summary*///The 2nd Chapter C + + template technology//2.1 function Template--------------------------------------------------------------------------------------------------- -//P#include <stdio.h>Template<classT>T Max (t A, T b) {returnA> b?a:b;}intMainvoid) {printf ("%d\n", Max <int> (3,Ten)); printf ("%f\n", Max <Double> (16.9,2.8)); return 0;}// -#include <stdio.h>Template<classT1,classT2>T1 Max (T1 t1, T2 T2) {returnStatic_cast<t1> (t1> T2?t1:t2);}intMainvoid) {printf ("%f\n", Max (10.9,3)); return 0;}//Class 2.2 Template---------------------------------------------------------------------------------------------------- //p, my test#include <cstdio>#include<typeinfo>intMainvoid){  intI3); printf ("%s\n", typeID (i). Name ()); return 0;}// -#include <stdio.h>#include<typeinfo.h>Template<classT1,classT2>classa{T1 i;  T2 J;  Public: A (T1 t1, T2 T2) {i=T1; J=T2; }    BOOLComp () {returni >J; }    voidPrint_type ();}; Template<classT1,classT2>voidA&LT;T1, t2>::p rint_type () {printf ("the type of I is%s\n", typeID (i). Name ()); printf ("the type of J is%s\n", typeID (j). Name ());}intMainvoid) {A<int,Double> A (3,67.8); if(A.comp ()) printf ("i>j \ n"); Elseprintf ("i<=j \ n");  A.print_type (); return 0;}//2.3 Template Fully Special------------------------------------------------------------------------------------------------- ---// -#include <stdio.h>Template<classT>voidfunc (T a) {printf ("hello\n");}//function templates are completely specialTemplate <>voidfunc<int> (inta) {printf ("Hello there\n");}intMainvoid) {func (2);//Print Hello thereFunc'y');//Print Hello  return 0;}// in#include <stdio.h>//class template ATemplate <classT>classa{T i;  Public: A (T t) {i=T; } T Compute () {returnIi; }};//full specificity of class template aTemplate <>classa<int>{    inti; intK//Add new data member   Public: A (intt) {i=T; printf ("hello\n"); }  //Add Print    intCompute () {returnI *i *i; } //change to cubic calculation    voidf () {}//To add a new member function};intMainvoid) {A<Double> Dobj (2.5); A<int> iObj (5);//Print Helloprintf"%f\n", Dobj.compute ());//Square calculation 6.25printf"%d\n", Iobj.compute ());//Cubic Compute  return 0;}//2.4 function Template overloading------------------------------------------------------------------------------------------------ ----// -#include <stdio.h>Template<classT>voidfunc (T a) {printf ("Use the func (T a) template \ n");}//Overloading of function templatesTemplate <classT1,classT2>intfunc (T1 t1, T2 T2) {printf ("Use the func (T1 T1, T2 t2) template \ n"); return 1;}intMainvoid) {func ( -, -);//using overloaded function TemplatesFunc +); return 0;}//2.5 class template Inheritance-------------------------------------------------------------------------------------------------- --//30-31#include <stdio.h>Template<classT>classa{ Public:    voidfunc (T a) {printf ("Use the func (T a) member function template \ n"); }};template<classT1,classT2>classB: PublicA<t1>{   Public:    voidfunc (T1 t1, T2 T2) {printf ("Use the func (T1 T1, T2 T2) member function template \ n"); }};intMainvoid) {B<int,Double>b; B.func ( -, -); A<int> A = static_cast < a <int> >(b); A.func (Ten); return 0;}//2.6 Summary of this chapter--------------------------------------------------------------------------------------------------- -

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The 2nd Chapter C + + template technology