Run time error: R6010 abort () called:

edit

I am new to opencv.. I have this simple code:

//Header files
using namespace std;
using namespace cv;

int main()
{

    Mat image;  Mat templ;
    Mat result;
    int method = CV_TM_SQDIFF; 

    namedWindow( "result_window", CV_WINDOW_AUTOSIZE );

    image = imread ("Image.png", 1 );
    templ = imread ("template_m.png",1 ) ;

void matchTemplate (Mat image, Mat templ, Mat result, int method);

 imshow ( "result_window", result );
return 0;
}

But when i compile it it says abort() is called. Can anyone tell me what is the reason ??