C / C++ / MFC

suhi wrote:

1. error C4430: missing type specifier - int assumed. Note: C++ does not
support default-int

suhi wrote:

2. warning C4183: 'Open': missing return type; assumed to be a member
function returning 'int'

Peter Weyzen wrote:

When using vector, you don't declare the size.

#include <iostream>
#include <vector>
#include <stdlib.h>

using namespace std;

class Foo {
private:
  int num;
public:
  Foo() {
    num = rand();
    cout<<"Foo::Foo() - num = "<<num<<endl;
  }
  
  explicit Foo(const Foo& f) {
    num = f.num;
    cout<<"Foo::Foo(const Foo&) - num = "<<num<<endl;
  }
  
  const Foo& operator=(const Foo& f) {
    cout<<"Foo::operator=()"<<endl;
    num = f.num;
    return *this;
  }
  
  int getnum() {
    return num;
  }
};

int main() {
  vector<Foo> v(5);
  cout<<"size = "<<v.size()<<endl;
  cout<<"capacity = "<<v.capacity()<<endl;

  vector<Foo>::iterator it = v.begin();
  while( it != v.end() )
    cout<<(*it++).getnum()<<endl;
  return 0;
}

Foo::Foo() - num = 41
Foo::Foo(const Foo&) - num = 41
Foo::Foo(const Foo&) - num = 41
Foo::Foo(const Foo&) - num = 41
Foo::Foo(const Foo&) - num = 41
Foo::Foo(const Foo&) - num = 41
size = 5
capacity = 5
41
41
41
41
41

// VanillaConsole.cpp : Defines the entry point for the console application.
//
 
#include "stdafx.h"
#include <iostream>
#include <vector>
using namespace std;
 
class Log
{
public:
	Log()
	{
		cout << "Log()" << endl;
	}
 
	Log(const Log &copy_me) 
	{
		cout << "Log(const Log &copy_me)" << endl;
	}
 
	~Log() { cout << "~Log()" << endl; }
};
 
int main()
{
	vector<Log> g_Log(10);

	return 0;
}

Log()
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
Log(const Log &copy_me)
~Log()
~Log()
~Log()
~Log()
~Log()
~Log()
~Log()
~Log()
~Log()
~Log()
~Log()