update samples: waitKey() usage

Original commit is a5f19f7dd6ae5bc93f73e0417a9e0bfd34c01672
2016-08-12 15:11:30 +02:00
parent 4e7b521438
commit 6d34d6b47e
76 changed files with 142 additions and 154 deletions
@@ -306,8 +306,8 @@ int main( int argc, char** argv )

    for(;;)
    {
-        int c = waitKey(0);
-        switch( (char) c )
+        char c = (char)waitKey(0);
+        switch( c )
        {
        case '\x1b':
            cout << "Exiting ..." << endl;