fixed warnings

samples/cpp/cloning_demo.cpp

@@ -210,7 +210,7 @@ int main()
 
         Mat result;
 
-        illuminationChange(source, mask, result, .2, .4);
+        illuminationChange(source, mask, result, 0.2f, 0.4f);
 
         imshow("Output",result);
         imwrite(folder + "cloned.png", result);

samples/cpp/npr_demo.cpp

@@ -83,7 +83,7 @@ int main(int argc, char* argv[])
     else if(num == 3)
     {
         Mat img1;
-        pencilSketch(I,img1, img, 10 ,.1,.03);
+        pencilSketch(I,img1, img, 10 , 0.1f, 0.03f);
         imshow("Pencil Sketch",img1);
         imshow("Color Pencil Sketch",img);
     }