#include <iostream>
using namespace std;string path = "C:\Program Files (x86)\alipay\aliedit\5.1.0.3754";
string path2 = "C:\\Program Files (x86)\\alipay\\aliedit\\5.1.0.3754";
//更简洁的表示string path3 = R"(C:\Program Files (x86)\alipay\aliedit\5.1.0.3754)";
string path4 = R"(C:\Program "Files" (x86)\\alipay\aliedit\5.1.0.3754)";

int main(int argc, char *argv[])
{cout<<path<<endl;cout<<path2<<endl;cout<<path3<<endl;cout<<path4<<endl;return 0;
}

#include <iostream>
#include <vector>
#include <map>
using namespace std;
int main(int argc, char *argv[])
{string str = "china";　　 //！字符数组for(auto ch: str){cout<<ch<<endl;}　　int arr[] = {1,2,3,4};　　//！普通数组　　for(auto i: arr)　　{　　　　cout<<i<<endl;　　}　　　　vector<string> vs = {"abc","xyz","mnq"};　　vector<string>::iterator itr = vs.begin();　　for(; itr != vs.end(); itr++)　　{　　　　cout<<*itr<<endl;　　} 

　　//！vector　　for(auto &s : vs)　　{　　　　cout<<s<<endl;　　}

　　map<int,string> mis={{1,"c++"},{2,"java"},{3,"python"}};　　map<int,string>::iterator itr = mis.begin();　　for(; itr != mis.end(); ++itr)　　{　　　　cout<<(*itr).first<<"\t"<<itr->second<<endl;　　} 　　//！map　　for(auto &pair: mis)　　{　　　　cout<<pair.first<<"\t"<<pair.second<<endl;　　} 　　return 0;}

#include <iostream>
#include <vector>#include <list>
#include <map>
using namespace std;
int main(int argc, char *argv[])
{
#if 0vector<int> vi(5);cout<<vi.size()<<vi.capacity()<<endl;vector<int> vi2(5,10);for(auto i: vi2){cout<<i<<endl;} vector<int> vi3;for(int i=0; i<10; i++){vi3.push_back(i);} for(auto i: vi3){cout<<i<<endl;} list<int> li(5);cout<<li.size()<<endl;for(auto &i:li){cout<<i<<endl;} list<int> li2(5,10);cout<<li2.size()<<endl;for(auto &i:li2){cout<<i<<endl;} list<int> li3;for(int i=0; i<10; i++){li3.push_back(i);} cout<<li3.size()<<endl;for(auto &i:li3){cout<<i<<endl;}
#endifmap<int,string> mis;mis.insert(pair<int,string>(1,"c++"));mis.insert(pair<int,string>(2,"java"));mis.insert(pair<int,string>(3,"python"));mis.insert(map<int,string>::value_type(4,"c"));mis.insert(map<int,string>::value_type(5,"php"));for(auto is: mis){cout<<is.first<<"\t"<<is.second<<endl;} mis[6] = "scala";mis[7] = "basic";mis[8] = "ruby";for(auto &is: mis){cout<<is.first<<"\t"<<is.second<<endl;} return 0;
}

#include <iostream>
#include <vector>
#include <list>
#include <map>using namespace std;int main(int argc, char *argv[])
{vector<int> iv = {1,2,3,4,5};list<int> li = {1,2,3,4,5};map<int,string> mis = {{1,"c"},{2,"c++"},{3,"java"},{4,"scala"},{5,"python"}};mis.insert({6,"ruby"});// map<int,string>::iterator itr = mis.begin();// for(; itr != mis.end(); ++itr)// {// cout<<itr->first<< itr->second<<endl;// }for(auto &is: mis){cout<<is.first<<is.second<<endl;}return 0;
}                

#include <iostream>
#include <vector>
using namespace std;
template <typename T>
class MyArray
{
private:vector<T> m_Array;
public:MyArray() { }MyArray(const initializer_list<T>& il){for (auto x : il)m_Array.push_back(x);}
};int main()
{MyArray<int> foo = { 3, 4, 6, 9 };return 0;
}

#include <iostream>
using namespace std;class complex
{
public:complex(int x, int y):_x(x),_y(y){}private:int _x;int _y;
};complex func(const complex & com)
{return {1,2};
} int main(int argc, char *argv[])
{int a = 10;int aa[] = {1,2,3};complex com(1,2);

//---------------------------int a_ = {1};int aa_[] = {1,2,3};complex com_ = {1,2};func({1,2});return 0;
}

#include <iostream>
using namespace std;int func()
{return 8;
} int main(int argc, char *argv[])
{auto i = 5;auto &ri = i;auto rf = func();const auto *p = &ri;static auto si = 100;return 0;
}

#include <iostream>
#include <vector>using namespace std;//void foo(auto i)
//{
// cout<<i<<endl;
//}int main(int argc, char *argv[])
{int arr[10] = {0};auto aa = arr; //！auto == const int *cout<<sizeof(aa)<<sizeof(aa)<<endl;// auto aaa[10] = arr; //！错误的用法：C/C++中数组不可以直接赋值的属性是不可违背的。vector<int> vi;auto ivcp = vi;// vector<auto> va = vi;return 0;
}

#include <iostream>
using namespace std;int func()
{return 1;
} int main(int argc, char *argv[])
{int a = 10;cout<<sizeof(a)<<endl;decltype(a) b = 20;　　//！decltype(a) == intdecltype(a+b) c = 30;cout<<a<<b<<c<<endl;const int & cira = a;decltype(cira) cirb = b;cout<<cira<<cirb<<endl;int *pa = &a;decltype(pa) pb = &b;cout<<&a<<"\t"<<pa<<endl;cout<<&b<<"\t"<<pb<<endl;decltype(func()) df;cout<<sizeof(df)<<endl;return 0;
}

#include <iostream>
#include <vector>
#include <map>using namespace std;int main(int argc, char *argv[])
{vector<int> vi = {1,2,3,4,5,0}; typedef decltype(vi.begin()) Itr;for(Itr itr = vi.begin(); itr != vi.end(); ++itr){cout<<*itr<<endl;} map<int,string> mis;mis.insert(map<int,string>::value_type(1,"abc"));mis.insert(decltype(mis)::value_type(2,"java"));typedef decltype(map<int,string>::value_type()) Int2String;　　 mis.insert(Int2String(3,"c++"));for(auto& is:mis){cout<<is.first<<is.second<<endl;} return 0;
}

#include <iostream>using namespace std;template<typename R, typename T,typename U>
R add(T a, U b)
{return a+b;
} template<typename R, typename T,typename U>
auto add2(T a, U b)->decltype(a+b)
{return a+b;
} int main(int argc, char *argv[])
{int a = 1;float b = 1.1;auto ret = add<decltype(a+b),int,float>(a,b);cout<<ret<<endl;auto ret2 = add2<decltype(a+b)>(a,b);cout<<ret2<<endl;return 0;
}

class Add
{
public:int operator()(int x, int y){return x+y;}
};

#include <iostream>
using namespace std;
class Add
{
public:int operator()(int x, int y){return x+y;}
};int main(int argc, char *argv[])
{int a = 1 , b = 2;Add add;cout<<add(a,b)<<endl;return 0;
}    

#include <iostream>using namespace std;class Tax
{
public:Tax(float r, float b):_rate(r),_base(b){}float operator()(float money){return (money-_base)*_rate;}private:float _rate;float _base;
};int main(int argc, char *argv[])
{Tax high(0.40,30000);Tax middle(0.25,20000);Tax low(0.12,10000);cout<<"大于 3w 的税:"<<high(37500)<<endl;cout<<"大于 2w 的税:"<<middle(27500)<<endl;return 0;
}