I have this error
Undefined symbols for architecture i386:
“_OBJC_CLASS_$_ViewController”, referenced from:
objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture i386
clan
Category: Hardware
Hardware development generally refers to the hardware development of electronic products. The research and development of a kind of visible electronic products, such as mobile phones, mice, keyboards, and stereos are all hardware. Hardware development is a series of researches carried out in these areas. Hardware development is generally divided into: schematic design, circuit diagram design, PCB board design, test board production, functional testing, stability testing, single-chip design, small batch production, formal market or formal use and other steps.
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