将下面的伪码转换为程序流程图和PAD图 do while q=0 ...... if r=0 then goto C end do w=0 x=0 C: y=0 Z=0

程序流程图：

+--------------+
|  Start Do-While Loop |
+--------------+
        |
        v
+-------------+
|    q = 0    |
+-------------+
        |
        v
+----------------------+
|  Check if r is equal to 0  |
+----------------------+
        |
        v
+----------------------+
|  Jump to C if r=0   |
+----------------------+
        |
        v
+-----------------------+
| Set w to 0 |
+-----------------------+
        |
        v
+-----------------------+
| Set x to 0 |
+-----------------------+
        |
        v
+-----------------------+
|       Label C         |
+-----------------------+
        |
        v
+-----------------------+
| Set y to 0 |
+-----------------------+
        |
        v
+-----------------------+
| Set z to 0 |
+-----------------------+
        |
        v
+----------------------+
|  End Do-While Loop  |
+----------------------+

PAD图：

┌─────────────┐
│ Start Do-While Loop │
└─────────────┘
      │ q = 0
      v
┌─────────────┐
│ Check if r is equal to 0 │
└─────────────┘
      │
      v
┌───────────────────────┐
│ Jump to C if r = 0        │
└───────────────────────┘
      │
      v
┌───────────────────────┐
│ Set w to 0                     │
└───────────────────────┘
      │
      v
┌───────────────────────┐
│ Set x to 0                     │
└───────────────────────┘
      │
      v
┌─────────────┐
│ Label C            │
└─────────────┘
      │
      v
┌───────────────────────┐
│ Set y to 0                     │
└───────────────────────┘
      │
      v
┌───────────────────────┐
│ Set z to 0                     │
└───────────────────────┘
      │
      v
┌─────────────┐
│ End Do-While Loop  │
└─────────────┘