objective c - Use of undeclared identifier in main.m -


i'm starting objective-c , have problem.

the compiler giving me error message:

semantic issue: use of undeclared identifier

and main.m code:

#import <uikit/uikit.h>  #import "hmjappdelegate.h"  int main(int argc, char *argv[]) {     @autoreleasepool {         return uiapplicationmain(argc, argv, nil, nsstringfromclass([hmjappdelegate class]));     }  }

this error in main.m file.

how can fix problem?


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