C++11 with Visual Studio 11 Beta

main.cpp

//
// testing out Visual Studio 11 Beta's support of 
// the latest C++11 standard
// 
// code snippets from 
//    http://en.wikipedia.org/wiki/C%2B%2B11
//    http://solarianprogrammer.com
//    

#include "stdafx.h"
#include <iostream>
#include <thread>
#include <regex>

using namespace std;

static const int num_threads = 10;
 
//This function will be called from a thread
void call_from_thread(int tid) {
    cout << endl << "Launched by thread " << tid;
}
 
int test_threads() 
{
    cout << endl << "test_threads" << endl;

    thread t[num_threads];
 
    //Launch a group of threads
    for (int i = 0; i < num_threads; ++i) {
        t[i] = thread(call_from_thread, i);
    }
 
    cout << endl << "Launched from the main\n";
 
    //Join the threads with the main thread
    for (int i = 0; i < num_threads; ++i) {
        t[i].join();
    }
 
    return 0;
}

void test_ranged_based_for_loop()
{
	cout << endl << "test_ranged_based_for_loop" << endl;

	int my_array[5] = {1, 2, 3, 4, 5};
	for (int &x : my_array) {
	    x *= 2;
	    cout << x << endl;
	}
}


void test_lambda()
{
    cout << endl << "test_lambda" << endl;

    int n=10;
    vector<int>v(n);
    //initialize the vector with values from 10 to 1
    for(int i=n,j=0;i>0;i--,j++)
	v[j]=i;
    //print the unsorted vector
    for(int i=0;i<n;i++)
	cout<<v[i]<<" ";
    cout<<endl;
    
    //sort the vector using a lambda 
    sort(v.begin(),v.end(),[](int i,int j)->bool{return (i<j);});
    //print the sorted vector
    for(int i=0;i<n;i++)
	cout<<v[i]<<" ";
    cout<<endl;
}

void test_regex()
{
    cout << endl << "test_regex" << endl;

    string input;
    regex integer("(\\+|-)?[[:digit:]]+");

    //As long as the input is correct ask for another number
    while(true)
    {
        cout<<"give me an integer [q to quit]: "<< endl;
        cin>>input;
        //Exit when the user inputs q
        if(input=="q")
            break;
        if(regex_match(input,integer))
            cout<<"integer"<< endl;
        else
        {
            cout<<"Invalid input"<< endl;
        }
    }
}


int main()
{
    test_threads();
    test_ranged_based_for_loop();	
    test_lambda();
    test_regex();
    return 0;
}