[C + +] use Xcode to write C + + program [5] function overload and template

Using Xcode to write the overloads and templates of C + + program [5] Functions

This section includes function overloading, implicit function overloading, function templates, parametric function templates

Overloading of functions

#include <iostream>using namespacestd;intOperate (intAintb) {returnAb);}DoubleOperate (DoubleADoubleb) {returnAb);}intMain () {intx =5; inty =2; Doublen =5.0 ; Doublem =2.0; cout<< operate (x, y) <<'\ n'; cout<< operate (n,m) <<'\ n'; return 0;}

Print results

Ten 2.5  0

function templates

#include <iostream>using namespacestd;//TemplatesTemplate <classT>t sum (t A, T b) {T result; Result= A +b; returnresult;}intMain () {//Value Initialization    inti =5; intj =6; intK =0; Doublef =2.0, G =0.5, H; //using Template FunctionsK = sum<int>(i, j); H= sum<Double>(f, g); //Print Outputcout << k <<'\ n'; cout<< h <<'\ n'; return 0;}

Print results

 - 2.5  0

Template Auto-match

#include <iostream>using namespacestd;template<classTclassU>BOOLare_equal (T A, U b) {return(A = =b);}intMain () {//Automatic template recognition    if(Are_equal (Ten,10.0)) cout<<"x and Y are equal\n"; Elsecout<<"x and y is not equal\n"; return 0;}

Print results

0

Template with Parameters

#include <iostream>using namespacestd;template<classTintN>T fixed_multiply (t val) {returnVal *N;}intMain () {std::cout<< fixed_multiply<int,2> (Ten) <<'\ n'; Std::cout<< fixed_multiply<int,3> (Ten) <<'\ n';}

Print results

 -  -  0

[C + +] use Xcode to write C + + program [5] function overload and template