Declare Operator + ( ByRef lhs As Byte, ByRef rhs As Byte ) As Byte
Declare Operator + ( ByRef lhs As UByte, ByRef rhs As UByte ) As UByte
Declare Operator + ( ByRef lhs As Short, ByRef rhs As Short ) As Short
Declare Operator + ( ByRef lhs As UShort, ByRef rhs As UShort ) As UShort
Declare Operator + ( ByRef lhs As Integer, ByRef rhs As Integer ) As Integer
Declare Operator + ( ByRef lhs As UInteger, ByRef rhs As UInteger ) As UInteger
Declare Operator + ( ByRef lhs As LongInt, ByRef rhs As LongInt ) As LongInt
Declare Operator + ( ByRef lhs As ULongInt, ByRef rhs As ULongInt ) As ULongInt

Declare Operator + ( ByRef lhs As Single, ByRef rhs As Single ) As Single
Declare Operator + ( ByRef lhs As Double, ByRef rhs As Double ) As Double

Declare Operator + ( ByRef lhs As T Pointer, ByRef rhs As Integer ) As T Pointer
Declare Operator + ( ByRef rhs As Integer, ByRef lhs As T Pointer ) As T Pointer

Declare Operator + ( ByRef lhs As T , ByRef rhs As Integer ) As T
Declare Operator + ( ByRef lhs As Integer, ByRef rhs As T ) As T

result = lhs + rhs

lhs
rhs
T

返回两个表达式的和。

当左和右侧表达式是数值时，操作符 +（添加）返回两个值的总和。

当左和右侧表达式是字符串值时，操作符 +（添加）连接两个字符串并返回结果。

如果积分值n 添加到T Pointer类型，则操作符对地址执行指针运算，返回T 值的存储位置n ，假设n 位于T 值的连续数组）。这与数字加法的行为不同，因为Integer的值按SizeOf( T )缩放。

任何操作数都不会被修改。

该操作符可以被重载以接受用户定义的类型。

Dim n As Single
n = 4.75 + 5.25
Print n

将产生输出：

10

• 在-lang qb 方言中，此运算符无法重载。
  
  

• 没有
  
  

• 操作符 + (String Concatenation)
  
• 数学函数