hour12_1a.cpp

来自「《24学时精通c++》的随书源码的下半部分。欢迎下载学习。」· C++ 代码 · 共 34 行

 //Listing 12.1
 // Passing pointers to objects
 #include <iostream>

 #include "simplecat.hpp"
 
 SimpleCat FunctionOne (SimpleCat theCat);
 SimpleCat* FunctionTwo (SimpleCat *theCat);

  int main()
 {
     std::cout << "Making a cat...\n";
     SimpleCat Frisky;
     std::cout << "Calling FunctionOne...\n";
     FunctionOne(Frisky);
     std::cout << "Calling FunctionTwo...\n";
     FunctionTwo(&Frisky);
     return 0;
 }
 
 // FunctionOne, passes by value
 SimpleCat FunctionOne(SimpleCat theCat)
 {
     std::cout << "Function One. Returning...\n";
     return theCat;
 }
 
 // functionTwo, passes by reference
 SimpleCat* FunctionTwo (SimpleCat  *theCat)
 {
     std::cout << "Function Two. Returning...\n";
     return theCat;
 }