画出下列代码段对应的程序流程图，并设计一组测试用例，要求满足判定/条件覆盖和条件组合覆盖。 int test(int A, int B) { Int X=0; if ((A>1) and (B<10)) then X=A-B; if ((A=1) or (B>20)) then X=A+B; return X; }

程序流程图如下：

+-------------------+
|   Start           |
+-------------------+
         |
         | (A>1) and (B<10)
         v
+-------------------+
|   X=A-B          |
+-------------------+
         |
         | (A=1) or (B>20)
         v
+-------------------+
|   X=A+B           |
+-------------------+
         |
         v
+-------------------+
|   Return X        |
+-------------------+
         |
         v
+-------------------+
|   End             |
+-------------------+

测试用例设计如下：

判定/条件覆盖：

| Test Case | A | B | Expected Output |
|-----------|-------|-------|----------------|
| TC1 | 0 | 10 | 0 |
| TC2 | 2 | 9 | -7 |
| TC3 | 1 | 21 | 22 |

条件组合覆盖：

| Test Case | A | B | Expected Output |
|-----------|-------|-------|----------------|
| TC1 | 2 | 9 | -7 |
| TC2 | 2 | 21 | 23 |
| TC3 | 1 | 9 | -8 |
| TC4 | 1 | 21 | 22 |