created docs

diff --git a/samples/c/contours.c b/samples/c/contours.c
index 4af2d2a..2fc8918 100644 (file)
--- a/samples/c/contours.c
+++ b/samples/c/contours.c
@@ -1,5 +1,16 @@
 #include <opencv2/imgproc/imgproc.hpp>
 #include <opencv2/highgui/highgui.hpp>
+#include <stdio.h>
+void help()
+{
+       printf("\nThis program creates an image to demonstrate the use of the \"c\" contour\n"
+                       "functions: cvFindContours() and cvApproxPoly() along with the storage\n"
+                       "functions cvCreateMemStorage() and cvDrawContours().\n"
+                       "It also shows the use of a trackbar to control contour retrieval.\n"
+                       "\n"
+                       "Call:\n"
+                       "./contours\n");
+}
 
 #define w 500
 int levels = 3;
@@ -18,12 +29,14 @@ void on_trackbar(int pos)
     cvReleaseImage( &cnt_img );
 }
 
+
+
 int main( int argc, char** argv )
 {
     int i, j;
     CvMemStorage* storage = cvCreateMemStorage(0);
     IplImage* img = cvCreateImage( cvSize(w,w), 8, 1 );
-
+    help();
     cvZero( img );
 
     for( i=0; i < 6; i++ )