#define STRING(x) @#x
NSString*conststr1 =STRING(abc;{a; b = c};abc);
NSString*str =STRING(abc);
NSLog(@"str = %@",str);
NSLog(@"str1 = %@",str1);
輸出：
2017-12-07 11:39:04.550770+0800 BeautifyFaceDemo[21439:8865890] str = abc
2017-12-07 11:39:04.550830+0800 BeautifyFaceDemo[21439:8865890] str1 = abc;{a; b = c};abc
