一个程序的控制流图中有5个结点，8条边，在测试用例数最少的情况，确保程序 中每个可执行语句至少执行一次所需要的测试用例数的上限是（ ）。
- A.4
- B.5
- C.6
- D.7
正确答案及解析
正确答案
解析
控制流程图的环路复杂性 V(G)等于：
（1）控制流程图中的区域个数。
（2）边数-结点数+2。
（3）判定数+1。
本题为：8-5+2=5
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