【单选题】【消耗次数：1】
假定有“struct BOOK{char title[40];float price;};struct BOOK *book;”，则不正确的语句为（ ）。
①
struct BOOK *x=malloc(book);
②
struct BOOK x={“C++ Programming”,27.0};
③
struct BOOK *x=malloc(sizeof(BOOK));
④
struct BOOK **x=
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【单选题】
假定有“struct BOOK{char title[40];float price;};struct BOOK *book;”，则不正确的语句为（ ）。
①
struct BOOK *x=malloc(book);
②
struct BOOK x={“C++ Programming”,27.0};
③
struct BOOK *x=malloc(sizeof(BOOK));
④
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【单选题】
假定有“struct BOOK{char title[40];float price;} book;”，则正确的语句为（ ）。
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假定有“struct BOOK{char title[40];float price;} book;”，则正确的语句为（ ）。
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