
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question

Transcribed Image Text:**Code Explanation and Output:**
### Code
```python
stop = int(input())
result = 0
for a in range(2):
print(a, end=': ')
for b in range(4):
result += a + b
if result > stop:
print('-', end=' ')
continue
print(result, end=' ')
print()
```
### Input
The program takes an integer input `6`.
### Output Explanation
The program consists of nested loops. It iterates over a range of numbers, modifying and checking the `result` variable, and printing specific values based on the condition:
1. **Outer loop (`for a in range(2)`):** This loops over `a` with values `0` and `1`.
2. **Inner loop (`for b in range(4)`):** Within each iteration of the outer loop, this loops over `b` with values `0`, `1`, `2`, and `3`.
3. **Result Calculation (`result += a + b`):**
- During each iteration, `result` is increased by the sum of `a` and `b`.
4. **Condition Check (`if result > stop:`):**
- If `result` exceeds the input value (`6` in this case), it prints `'-'` and skips to the next iteration.
5. **Printing (`print(result, end=' ')`):**
- If `result` is not greater than `stop`, it prints the current value of `result`.
### Program Output
With `input = 6`, the output will print the following:
```
0: 0 1 3 6 -
1: 8 - - -
```
**Explanation of the Output:**
- **For `a = 0`:**
- Initial result values are `0, 1, 3, 6`. When `b = 3`, `result` becomes `10`, which is greater than `6`, so `'-'` is printed.
- **For `a = 1`:**
- Initial result value is `8`, greater than `6`, so `'-'` is printed.
- Subsequent `result` values exceed `6`, resulting in additional `'-'` characters being printed.
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