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.

[画像:## 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]
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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
[画像:## 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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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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