关于C++用sprintf方法字符串转字符数组

#include <cv.h>

#include <highgui.h>

#include <math.h>

#include <stdlib.h>

#include <stdio.h>

#include "opencv2/opencv.hpp"

#include "windows.h"



using namespace cv;

using namespace std;



int main(int argc, char* argv[])

{

	String path="E:/编程/c#/opencv/opencvtest/Debug/image";

	Directory  dir;

	vector<String> fileNames = dir.GetListFiles(path, "*.jpg", false); 

	vector<String> fileFullName(fileNames.size());

	for(int i=0; i < fileNames.size(); i++)  

	{  

	    String fileName = fileNames[i];  	

	    fileFullName[i] = path + fileName; 	

	}  



	for(vector<string>::size_type i = 0; i < fileFullName.size(); ++i)

	{   

		char* a = new char(fileFullName[i].length()+1);

		sprintf(a ,"%s" , fileFullName[i].c_str());

		cout<<a<<endl;		

	}	

	system("pause");

}