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A.function1运行1次,function2运行2次
B.function1运行2次,function2运行1次
C.function1运行2次,function2运行3次
D.function1运行2次,function2运行2次
A.***123***456
B.***123456***
C.***123456
D.123456
A.Fraction& operator++();
B.Fraction& operator++(int);
C.friend Fraction& operator++();
D.friend Fraction& operator++(int);
A.①②皆无编译错误
B.①有编译错误,②无编译错误
C.①无编译错误,②有编译错误
D.①②皆有编译错误
A.MyClass arrays[2];
B.MyClass arrays[2]={MyClass(5)};
C.MyClass arrays[2]={MyClass(5), MyClass(6)};
D.MyClass*arrays=new MyClass[2];
A.*@#@
B.#@*@
C.*#@@
D.#*@@
A.function1
B.function2
C.function3
D.function4
A.ifstream fin; fin. open("d:\\test.txt", ios_base::in);
B.fstream fio; fio. open("d:\\test. txt”, ios_base::out);
C.ofstream fout; fout. open("d:\\test. txt”, ios_base::out);
D.ofstream fout; fout. open("d:\\test. txt”, ios_base::app);
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