CPP

c++ garbage collection

// raii.cpp

#include <iostream>
#include <new>
#include <string>

class ResourceGuard{
  private:
    const std::string resource;
  public:
    ResourceGuard(const std::string& res):resource(res){
      std::cout << "Acquire the " << resource << "." <<  std::endl;
    }
    ~ResourceGuard(){
      std::cout << "Release the "<< resource << "." << std::endl;
    }
};

int main(){

  std::cout << std::endl;

  ResourceGuard resGuard1{"memoryBlock1"};

  std::cout << "
Before local scope" << std::endl;
  {
    ResourceGuard resGuard2{"memoryBlock2"};
  }
  std::cout << "After local scope" << std::endl;
  
  std::cout << std::endl;

  
  std::cout << "
Before try-catch block" << std::endl;
  try{
      ResourceGuard resGuard3{"memoryBlock3"};
      throw std::bad_alloc();
  }   
  catch (std::bad_alloc& e){
      std::cout << e.what();
  }
  std::cout << "
After try-catch block" << std::endl;
  
  std::cout << std::endl;

}

is there garbage collection in c++

A C++ program can contain both manual memory management and garbage collection happening in the same program. According to the need, either the normal pointer or the specific garbage collector pointer can be used. Thus, to sum up, garbage collection is a method opposite to manual memory management.