Change the message displayed by hello.py
- Update the sayHello() function to output the user's name
- Change the sayGoodbye() function to a friendlier message
typedefNS_ENUM(NSInteger,UIViewContentMode){UIViewContentModeScaleToFill,UIViewContentModeScaleAspectFit,// contents scaled to fit with fixed aspect. remainder is transparentUIViewContentModeScaleAspectFill,// contents scaled to fill with fixed aspect. some portion of content may be clipped.UIViewContentModeRedraw,// redraw on bounds change (calls -setNeedsDisplay)UIViewContentModeCenter,// contents remain same size. positioned adjusted.UIViewContentModeTop,UIViewContentModeBottom,UIViewContentModeLeft,UIViewContentModeRight,UIViewContentModeTopLeft,UIViewContentModeTopRight,UIViewContentModeBottomLeft,UIViewContentModeBottomRight,};