Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Please answer correctly. Also, I attachs the answer option on the image as well.
Transcribed Image Text:## Matching Input and Output Sequences in a Simple Program
### Program Description
The provided code is a simple program written in a language similar to Python. It takes two character inputs `d1` and `d2` and constructs a message based on these inputs. Here's the program:
```python
String message = ""
char d1 = input()
char d2 = input()
if(d1 == 'A')
{
message = message + "I see "
}
else if(d1 == 'B')
{
message = message + "I love "
}
if(d2 == 'A')
{
message = message + "the world!"
}
else
{
message = message + "the moon!"
}
print message
```
### How the Program Works
1. **Initialize Message**: The variable `message` is initialized as an empty string.
2. **Input Characters**: The program takes two characters as inputs, `d1` and `d2`.
3. **First Condition (d1)**:
- If `d1` is 'A', add "I see " to `message`.
- If `d1` is 'B', add "I love " to `message`.
4. **Second Condition (d2)**:
- If `d2` is 'A', add "the world!" to `message`.
- For any other character, add "the moon!" to `message`.
5. **Output**: Finally, the program prints the constructed message.
### Matching Input and Output Sequences
Here, you need to match each input sequence with its corresponding output when the program runs.
| Input Sequence | Output Sequence |
| -------------- | -------------------------|
| In: 'A', 'A' | Out: "I see the world!" |
| In: 'A', 'B' | Out: "I see the moon!" |
| In: 'A', 'C' | Out: "I see the moon!" |
| In: 'B', 'A' | Out: "I love the world!" |
| In: 'B', 'B' | Out: "I love the moon!" |
| In: 'B', 'C' | Out: "I love the moon!" |
| In: 'C', 'A' | Out: "the world!" |
| In: 'C
Transcribed Image Text:## Educational Programming Exercise: Input-Output Matching
**Instructions:**
Match every input sequence with its corresponding output when the given program is run.
### Program Description
```python
String message = ""
char d1 = input()
char d2 = input()
if(d1 == 'A')
{
message = message + "I see "
}
else if(d1 == 'B')
{
message = message + "I love "
}
if(d2 == 'A')
{
message = message + "the world!"
}
else
{
message = message + "the moon!"
}
print message
```
### Input-Output Matching
Below you will find input sequences on the left-hand side and a dropdown list on the right-hand side. Match each input sequence with the corresponding output based on the program's logic.
#### Input Sequences and Dropdown Options:
1. In: `'A', 'A'` → [dropdown]
2. In: `'A', 'B'` → [dropdown]
3. In: `'A', 'C'` → [dropdown]
4. In: `'B', 'A'` → [dropdown]
5. In: `'B', 'B'` → [dropdown]
6. In: `'B', 'C'` → [dropdown]
7. In: `'C', 'A'` → [dropdown]
8. In: `'C', 'B'` → [dropdown]
9. In: `'C', 'C'` → [dropdown]
### Explanation of the Program:
- The program initializes an empty string named `message`.
- It takes two character inputs: `d1` and `d2`.
- Depending on the value of `d1`, it appends either "I see " or "I love " to the `message`.
- It then checks the value of `d2`:
- If `d2` is 'A', it appends "the world!" to the `message`.
- For any other value of `d2`, it appends "the moon!" to the `message`.
- Finally, it prints the `message`.
### Possible Outputs:
Consider the following descriptions for the dropdown options:
1. "I see the world!"
2. "I see the moon!"
3. "I love the world!"
4. "I love the moon!"
5. No output (applicable if none of the conditions are met).
### How
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