autoキーワード

#include <vector>
#include <algorithm>

void test1()
{
auto f = []( int n ){ printf( "%d\n", n ); };

std::vector<int> v;
v.push_back( 1 );
v.push_back( 2 );
v.push_back( 3 );

std::for_each( v.begin(), v.end(), f );

getchar();
}


void test2()
{
auto f = []( int n ){ printf( "%d\n", n ); };

f( 15 );

getchar();
}