匿名函数和for_each用法

匿名函数，C++11的 for_each 用法

#include <iostream>
#include <algorithm>
#include "testClassA.h"
 
using namespace std;
 
void tiwce(int& elem)
{
elem = elem * ;
}
// 不带参数，不带返回值
// [](){cout << 123 << ","; };
// []{cout << 123 << ","; };
 
// 不带参数，带返回值
// []()->(int){cout << 123 << ","; return 666; };
 
// 带参数，带返回值的
//[](int elem)->(int){cout << elem << ","; return 666; };
 
// 带参数，不带返回值， lamb 表达式
// [](int elem){cout << elem << ","; };
 
int main()
{
P px = { ,  };
int values[] {, , , , , , , };
 
//    for_each(&values[0], &values[5], tiwce);
//    for_each(&values[0], &values[5], [](int& elem){elem = elem * 2; });
//    for_each(&values[0], &values[5], [](int elem){cout << elem << ","; });
//for (auto v : values)
//{
//    cout << v << ", ";
//}
 
int x = ;
int y = ;
 
cout << "" << endl;
 
auto qqq = [x, &y]{
std::cout << "X:" << x << endl;
std::cout << "Y:" << y << endl;
++y;
};
 
cout << "" << endl;
x = y = ;
cout << x << endl;
cout << "" << endl;
 
qqq();
qqq();
cout << "Final:" << "X:" << x << ",Y:" << y << endl;
 
cout << endl;
cout << "C++11 standard" << endl;
system("pause");
return ;
}