Speech recognizer

// Praktika.cpp: определяет точку входа для консольного приложения.
#include "stdafx.h" //для VS2010
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<map>
#include<queue>
#include<stack>
#include<cmath>
#include<cctype>
#include<ctime>
#include<cstdlib>
#include<string>
#include<vector>
#include<set>
#include<bitset>
#include<fstream>
#include<sstream>
#include"curl/curl.h"
#pragma comment(lib , "curllib.lib")
#define INF 1000010000
#define nl '\n'
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define fi first
#define se second
#define pii pair<int,int>
#define pdd pair<double,double>
#define all(c) (c).begin(), (c).end()
#define SORT(c) sort(all(c))
#define sz(c) (c).size()
#define rep(i,n) for( int i = 0; i < n; ++i )
#define repi(i,n) for( int i = 1 ; i <= n; ++i )
#define repn(i,n) for( int i = n - 1 ; i >= 0 ; --i )
#define repf(j,i,n) for( int j = i ; j < n ; ++j )
#define die(s) {std::cout << s << nl;}
#define dier(s) {std::cout << s; return 0;}
#define vi vector<int>
typedef long long ll;
using namespace std;
const string KEY = "dd5f5efe-af4e-4edd-b106-a16382946610";

inline size_t write_response_data(char *ptr , size_t size , size_t nmemb , void *userdata){
    stringstream* s = (stringstream*)userdata;
    size_t n = size * nmemb;
    s -> write(ptr, n);
    return n;
}

inline size_t read_request_data(char *ptr, size_t size, size_t nmemb, void *userdata){
    ifstream* f = (ifstream*)userdata;
    size_t n = size * nmemb;
    f -> read(ptr, n);
    size_t result = f -> gcount();
    return result;
}

string FILE_PATH = "C:\\Users\\Max\\Documents\\Visual Studio 2010\\Projects\\Praktika\\Praktika\\123.wav";
string Alpha = "";

inline void InitAlpha(){
    if(Alpha.size())return;
    for(char ch = '0' ; ch <= '9' ; ++ch) Alpha += ch;
    for(char ch = 'a' ; ch <= 'f' ; ++ch) Alpha += ch;
}

inline string GenUUID(){
    if(Alpha.size() == 0)InitAlpha();
    string ret = "";
    for(int i = 0 ; i < 32 ; ++i){
        int t = rand() % Alpha.size();
        ret += Alpha[t];
    }
    return ret;
}


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.precision(0);
    setlocale(LC_ALL , NULL);
    CURL *curl = NULL;
    curl = curl_easy_init();
    if(curl){
        curl_easy_setopt(curl , CURLOPT_HEADER , 1);
        curl_easy_setopt(curl , CURLOPT_POST , 1);
        curl_easy_setopt(curl , CURLOPT_VERBOSE , 1);
        curl_easy_setopt(curl , CURLOPT_IPRESOLVE , CURL_IPRESOLVE_V4);

        struct curl_slist *headers = NULL;

        headers = curl_slist_append(headers , "Content-Type: audio/x-wav");
        curl_easy_setopt(curl , CURLOPT_HTTPHEADER , headers);

        curl_easy_setopt(curl , CURLOPT_USERAGENT , "Dalvik/1.2.0 (Linux; U; Android 2.2.2; LG-P990 Build/FRG83G");
        curl_easy_setopt(curl , CURLOPT_URL , "asr.yandex.net/asr_xml?key=" + KEY + "&uuid=" + GenUUID() + "&topic=notes&lang=ru-RU");

        ifstream fileStream(FILE_PATH , ifstream::binary);
        fileStream.seekg(0 , fileStream.end);
        int length = fileStream.tellg();
        fileStream.seekg(0 , fileStream.beg);

        curl_easy_setopt(curl , CURLOPT_READFUNCTION , &read_request_data);
        curl_easy_setopt(curl , CURLOPT_POSTFIELDSIZE , length);
        curl_easy_setopt(curl , CURLOPT_READDATA , &fileStream);

        stringstream contentStream;

        curl_easy_setopt(curl , CURLOPT_WRITEFUNCTION , &write_response_data);
        curl_easy_setopt(curl , CURLOPT_WRITEDATA , &contentStream);

        CURLcode code = curl_easy_perform(curl);

        unsigned httpCode;
        curl_easy_getinfo(curl , CURLINFO_HTTP_CODE , &httpCode);
        stringstream msg;
        msg << "Http code is " << httpCode;
        cout << contentStream.str();
        ofstream fout("output.txt");
        fout << contentStream.str();
        fout.close();
        curl_free(headers);
        curl_easy_cleanup(curl);
    }
    system("Pause");
  return 0;
}