友元运算符@obj被C++编译器解释为()。 A: operator@(obj) B: operator@(obj,0) C: obj.operator@() D: obj.operator@(0)

假定类TEST中重载运算符＜＜，则运算符＜＜在类TEST中正确的声明形式为（ ） A: ostream& operator＜＜(ostream& output, const TEST& obj); B: friend ostream& operator＜＜(ostream& output, const TEST& obj); C: ostream& operator＜＜(const TEST& obj); D: friend ostream& operator＜＜(const TEST& obj);

运算符重载测验: 为类ABC定义重载运算符“+”，下列哪种定义形式是正确的？（） A: 定义为类ABC的函数成员： void operator +( ){......} B: 定义为类ABC的函数成员： ABC operator +( ABC obj ){......} C: 定义为类ABC的函数成员： ABC operator +( ABC obj1, ABC obj2 ){......} D: 定义为类ABC的友元函数： ABC operator +( ABC obj ){......}

Operator: ( ) A: An operator is a DNA region that is working with promoter for genes to express. B: An operator is a DNA region at 5’ of a gene for a repressor to bind to prevent gene expression. C: An operator is a repressor protein to help genes to express. D: An operator is a repressor protein to inhibit genes to express.

1、In MATLAB, the right division operator (/) and the left division operator (\) are equivalent.

The conditional operator (?:) ________. A: is the only ternary operator in C B: is a unary operator C: associates from left to right D: accepts two operands

The OR (||) operator _________.

以下装箱、拆箱语句中，错误的有（） A:  object obj=100；  int m=（int）obj； B:  object obj=100；  int m=obj； C:  object obj=（int）100；  int m=（int）obj； D:  object obj=（object）100；  int m=（int）obj；

Who is the operator?

The conditional operator (?:) ________.