Notes/cpp/effectivecpp/main.cpp at master · memorywalker/Notes · GitHub

Repository navigation

History

#include <iostream>

#include <BaseItem.h>

#include <vector>

#include <memory>

#include <tr1/memory>

#include <stdlib.h>

#include <math.h>

#include <string.h>

#include "Blob.h"

using namespace std;

void ShowItem(BaseItem& item)

{

cout<<"Item id: "<<item.GetID()<<endl;

}

void ShowItem(int data)

{

cout<<"Show integer: "<<data<<endl;

}

#define MAX_VALUE(a, b) ShowItem((a) > (b) ? (a) : (b))

template<typename T>

inline void MaxValue(const T& a, const T& b)

{

ShowItem(a > b ? a : b);

}

template<typename T>

int compare(const T& left, const T& right)

{

if (left < right) return -1;

if (left > right) return 1;

return 0;

}

template<typename T, class U>

T calc(const T& a, const U& b)

{

T tmp = a + b;

return tmp;

}

template<unsigned N, unsigned M>

int compare(const char (&p1)[N], const char (&p2)[M])

{

return strcmp(p1, p2);

}

void ManageObjects(int count)

{

std::tr1::shared_ptr<BaseItem> pItem(new BaseItem(5));

std::tr1::shared_ptr<BaseItem> pItem2(pItem); // pItem2指向对象，pItem也指向对象，引用计数为2

pItem = pItem2; // pItem2指向对象，pItem也指向对象

pItem2->Print();

pItem->Print();

//....

if(0 == count)

{

return ;

}

int main()

{

char szbuff[MAX_ITEM_COUNT] = {0};

cout << "main:" << (&MAX_ITEM_COUNT) << endl;

char szInfo[50] = {0};

float fValue = 6.625f;

int nPresion = 2;

//fValue += 5/pow(10,nPresion+1);

sprintf(szInfo, "%.*f", nPresion, fValue);

cout << szInfo << endl;

//ShowItem(34);

Game cod;

Game gta(cod);

gta.SetName("gta");

cod = gta;

cod.Print();

ManageObjects(0);

compare("good", "god");

Blob<int> squares = {0, 1, 2, 3, 4, 5};

for (size_t i = 0; i != squares.size(); i++)

{

squares[i] = i*i;

}

getchar();

return 0;

}

Notes/cpp/effectivecpp/main.cpp at master · memorywalker/Notes · GitHub

Repository navigation

Expand file tree

Breadcrumbs

main.cpp

Latest commit

History

Breadcrumbs

main.cpp

File metadata and controls