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【单选题】
有如下类定义: class Type{ public: Type(int i=0); Type operator-(int); friend Type operator+(Type,Type); private: int val; }; 若有对象定义:“Type c1;”,则下列语句中,错误的是______。A.
Type(3)+c1;
B.
c1+Type(3);
C.
3-c1;
D.
c1-3;
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B.
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C.
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D.
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A.
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B.
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C.
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