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Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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
Transcribed Image Text:The Python subprogram below shows an example of default parameter.
**Instructions:**
a. *Write* the outputs of the four subprogram calls below. Is there any invalid call?
b. *Identify* which subprogram calls used the default parameter value.
c. Do C++ and Java programming languages support default parameters?
**Subprogram:**
```python
def newFunc(length, width, height=4):
volume = length * width * height
print('The volume is', volume)
# Subprogram calls:
newFunc(4, 5)
newFunc(width=4, length=5, height=10)
newFunc(1, 4, 6)
newFunc(width=2, length=1)
```
**Analysis:**
- **First Call:** `newFunc(4, 5)` - Uses the default height of 4. The output is "The volume is 80."
- **Second Call:** `newFunc(width=4, length=5, height=10)` - Does not use the default. The output is "The volume is 200."
- **Third Call:** `newFunc(1, 4, 6)` - Does not use the default. The output is "The volume is 24."
- **Fourth Call:** `newFunc(width=2, length=1)` - Uses the default height of 4. The output is "The volume is 8."
**Invalid Call:** None of the calls are invalid.
**Default Parameter Usage:** First and fourth calls use the default parameter value.
**C++ and Java Support:**
- **C++** supports default parameters.
- **Java** does not support default parameters directly but can achieve similar behavior using method overloading.
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