warning: implicit declaration of function

This bastard is;
......../Classes/TemplateUIViewViewController.m:103: warning: implicit declaration of function 'UIGraphicGetCurrentContext'

And how to fix him ???

Integer without a cast

This error;
...../Classes/PostCard.m:42: warning: assignment makes pointer from integer without a cast


This appears when???

A typical (id)init method

This example shows a;

- (id)init {
    // Set self's frame to encompass the image
    if (self = [self initWithFrame:frame]) {
        placardImage = image;
        [self setupNextDisplayString];
    }
    return self;
}

The (id) allows for ANY object, and it must return it's self

Country GDPs

warning: Unable to read symbols for ....... (file not found)

Console error;
warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found).

What do YOU mean?