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1.
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struct BOOK{char title[40];float price;};struct BOOK *book;
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A
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A
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struct
BOOK
*x=malloc(book);
B
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struct
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x={
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C++
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,27.0};
C
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struct
BOOK
*x=malloc(sizeof(BOOK));
D
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struct BOOK **x=&book;
2.
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struct BOOK{char title[40];float price;} book;
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B
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銆?/p>
A
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struct BOOK x=&book;
B
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struct BOOK *x=&book;
C
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struct BOOK x=calloc(BOOK);
D
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struct BOOK *x=BOOK;
3
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C
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A
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B
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C
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D
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feof
4
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C
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fopen()
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D
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A
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B
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C
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D
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5
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B
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A
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gets()
B
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fgets()
C
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getc()
D
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fgetc()