Use C++ to batch download url link pictures

#include<iostream> 
#include<vector>
#include <fstream> 
#include<string>
#include <atlstr.h>
#include <windows.h>
#include <urlmon.h>
#include <atlconv.h>
#pragma comment(lib,"Urlmon.lib")
using namespace std;
int main() {
    
    
	std::ifstream infile("url\\new1.txt");
	std::vector<std::string> address;
	std::string url;
	char name[100];
	int flag = 0;
	while (infile >>url) {
    
    
		flag++;
		size_t len = url.length();
		int nmlen = MultiByteToWideChar(CP_ACP, 0, url.c_str(), len + 1, NULL, 0);
		wchar_t* buffer = new wchar_t[nmlen];
		MultiByteToWideChar(CP_ACP, 0, url.c_str(), len + 1, buffer, nmlen);
		sprintf_s(name, "target\ %d.jpg",flag);
		char * szStr = &name[0];
		CString str = CString(szStr);
		USES_CONVERSION;
		LPCWSTR wszClassName = A2CW(W2A(str));
		str.ReleaseBuffer();
		HRESULT hr = URLDownloadToFile(NULL, buffer, wszClassName, 0, NULL);
		int num = 0;
		if (hr == S_OK)
		{
    
    
			cout << num<<endl;
			num++;
		}

	}
	return 0;
}

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