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I am trying to save the blocks of the image after dividing the image. Please help me in saving blocks of the image after dividing it using c++(open CV). Here is the code.

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <fstream>


#include <conio.h>
#include "opencv\cvaux.h"
#include "opencv\highgui.h"


#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/core/core.hpp"

using namespace std;
using namespace cv;

int main( int argc, char** argv )
{
Mat image;
char file[256];
sprintf(file,"%s","/DEEPAK/My Documents/opencvdatabase/result1");
cvSaveImage(file,1);

image = imread("secret_image.tiff",1);
if(image.empty())
{
cout << "Could not open or find the image" << std::endl ;
return -1;
}


namedWindow("Image", CV_WINDOW_AUTOSIZE );
imshow("Image", image);


   // get the image data
 int height = image.rows;
 int width = image.cols;

 printf("Processing a %dx%d image\n",height,width);

cv :: Size smallSize ( 64 , 64 );

std :: vector < Mat > smallImages ;
namedWindow("smallImages", CV_WINDOW_AUTOSIZE );

for  ( int y =  0 ; y < image . rows ; y += smallSize . height )
{
    for  ( int x =  0 ; x < image . cols ; x += smallSize . width )
    {
        cv :: Rect rect =   cv :: Rect ( x , y , smallSize . width , smallSize . height );
        smallImages . push_back ( cv :: Mat ( image , rect ));
        sprintf(file,"%d%d%d_%d%d%d.jpg\n", smallImages);
        imwrite ("smallImages.tiff", cv :: Mat ( image , rect ) );
        imshow ( "smallImages",cv :: Mat ( image , rect ) );
        waitKey(0);
    }   
}
return 0;
        }