数据格式定义

#include "stdafx.h"
#include <sstream>
#include <iomanip>
#include <string>
int main(void)
{
	std::ostringstream oStringStream;
	oStringStream << std::setw(8) << std::hex << 23;
	std::string str = oStringStream.str(); //占8字符空间："      17

	return 0;
}