、软件测试阶段白盒测试，以如下程序为例，画出其程序流程图，并给出至少四种逻辑覆盖标准的测试用例。“ int a,b;e double c;e if(a>0 && b>0) c=c/a代 if(a>1/c>1)( c++ c+=b代

以下是程序的流程图：

              +---------+
              |  Start  |
              +---------+
                  |
                  |
                  | a > 0 && b > 0
                  |
              +---------+
              |  Step 1 |
              +---------+
                  |
                  |
                  | c = c / a
                  |
              +---------+
              |   End   |
              +---------+
                  |
                  |
                  |
                  | a > 1/c > 1
                  |
              +---------+
              |  Step 2 |
              +---------+
                  |
                  |
                  | c++
                  |
                  |
                  | c += b
                  |
              +---------+
              |   End   |
              +---------+

四种逻辑覆盖标准的测试用例如下：

1. a > 0 && b > 0，a = 5，b = 7，c = 2.0
2. a > 0 && b > 0，a = -3，b = 2，c = 5.0
3. a <= 0 || b <= 0
4. a > 1/c > 1，a = 2，b = 3，c = 0.5