[单项选择题] 下列程序段的执行结果为______。Dim m(3,3)As IntegerDim i As IntegerDim j As IntegerDim x As Integer

[单项选择题] 下列程序段的执行结果为______。Dim m(3,3)As IntegerDim i As IntegerDim j As IntegerDim x As Integer,第1张

[单项选择题] 下列程序段的执行结果为______。Dim m(3,3)As IntegerDim i As Integer Dim j As Integer Dim x As Integer

[单项选择题] 下列程序段的执行结果为______。

Dim m(3,3)As Integer

Dim i As Integer

Dim j As Integer

Dim x As Integer

For i=1 To 3

m(i,i)=i

Next

For i= 0 To 3

For j= 0 To 3

x=x +m(i,j)

Next

Next

Print x

A. 3 B) 4 C) 5 D) 6

正确答案:

D

参考解析:

通过第一个以i为循环变量的循环,令a(1,1)=1,a(2,2)=2,a(3,3)=3。然后通过双重循环,求数组a中所有元素的和并将结果赋值给x,由于在数组a中除了a(1,1)、a(2,2)和a(3,3)外其他元素都为0,所以x=1+2+3=6。

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