在Visual Basic中,与程序段:a = a + bb = a - ba = a - b功能相同的程序段是A.　a = b　　b = aB.　a = a + b　　a = a - b　　b = a - bC.t = aa = bb = tD.　If a > b Thena = b　　Elseb = a　　End If请问这道题为什么选C啊?

在Visual Basic中,与程序段:a = a + bb = a - ba = a - b功能相同的程序段是A.　a = b　　b = aB.　a = a + b　　a = a - b　　b = a - bC.t = aa = bb = tD.　If a > b Thena = b　　Elseb = a　　End If请问这道题为什么选C啊?
在Visual Basic中,与程序段:
a = a + b
b = a - b
a = a - b
功能相同的程序段是
A.　a = b
　　b = a
B.　a = a + b
　　a = a - b
　　b = a - b
C.t = a
a = b
b = t
D.　If a > b Then
a = b
　　Else
b = a
　　End If
请问这道题为什么选C啊?

在Visual Basic中,与程序段:a = a + bb = a - ba = a - b功能相同的程序段是A.　a = b　　b = aB.　a = a + b　　a = a - b　　b = a - bC.t = aa = bb = tD.　If a > b Thena = b　　Elseb = a　　End If请问这道题为什么选C啊?
交换2个变量的值,当然选C了
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