Compute the array initialization for Vector

#include <iostream>
#include <vector>
#include <algorithm>
#include <Windows.h>

using namespace std;
void ex1();
void ex2();
void ex3();
const int MAX = 100000000;
void ex1() {
	// QueryPerformanceCounter関数の1秒当たりのカウント数を取得する
	LARGE_INTEGER freq;
	QueryPerformanceFrequency(&freq);
	LARGE_INTEGER start, end;
	vector<int> array;
	QueryPerformanceCounter(&start);
	array.reserve(MAX);
	QueryPerformanceCounter(&end);

	double time = static_cast<double>(end.QuadPart - start.QuadPart) * 1000.0 / freq.QuadPart;
	printf("time %lf[ms]\n", time);
}

void ex2() {
	LARGE_INTEGER freq;
	QueryPerformanceFrequency(&freq);
	LARGE_INTEGER start, end;
	vector<int> array;
	QueryPerformanceCounter(&start);
	for (int i = 0; i < MAX; ++i) {
		array.push_back(i);
	}
	QueryPerformanceCounter(&end);
	double time = static_cast<double>(end.QuadPart - start.QuadPart) * 1000.0 / freq.QuadPart;
	printf("time %lf[ms]\n", time);
}

void ex3() {
	LARGE_INTEGER freq;
	QueryPerformanceFrequency(&freq);
	LARGE_INTEGER start, end;
	vector<int> array;
	QueryPerformanceCounter(&start);
	array.reserve(MAX);
	fill(array.begin(), array.end(), 1);
	QueryPerformanceCounter(&end);
	double time = static_cast<double>(end.QuadPart - start.QuadPart) * 1000.0 / freq.QuadPart;
	printf("time %lf[ms]\n", time);
}

int main()
{

	printf("ex1\n");
	ex1();
	printf("ex2\n");
	ex2();
	printf("ex3\n");
	ex3();
}