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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### Code Output Question **Question:** What is the output of the following code, assuming variables are declared and header files are all included? ```cpp sum = 0; for (i = 1; i <= 5; i++) { newNum = i; sum = sum + newNum; } cout << "The sum is " << sum << "." << endl; ``` **Multiple Choice Answers:** - O The sum is 15 - O The sum is 10 - O The sum is 10. - O The sum is 15. **Explanation:** In this C++ code snippet, a `for` loop is executed where the loop counter `i` iterates from 1 to 5 (inclusive). In each iteration, the current value of `i` is assigned to `newNum`, and this value is added to `sum`. Step-by-step, the loop performs the following calculations: - When `i = 1`, `sum = 0 + 1 = 1` - When `i = 2`, `sum = 1 + 2 = 3` - When `i = 3`, `sum = 3 + 3 = 6` - When `i = 4`, `sum = 6 + 4 = 10` - When `i = 5`, `sum = 10 + 5 = 15` Therefore, after the loop completes, the output printed by `cout` is `"The sum is 15."`. The correct answer is: **The sum is 15**.
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Transcribed Image Text:### Code Output Question **Question:** What is the output of the following code, assuming variables are declared and header files are all included? ```cpp sum = 0; for (i = 1; i <= 5; i++) { newNum = i; sum = sum + newNum; } cout << "The sum is " << sum << "." << endl; ``` **Multiple Choice Answers:** - O The sum is 15 - O The sum is 10 - O The sum is 10. - O The sum is 15. **Explanation:** In this C++ code snippet, a `for` loop is executed where the loop counter `i` iterates from 1 to 5 (inclusive). In each iteration, the current value of `i` is assigned to `newNum`, and this value is added to `sum`. Step-by-step, the loop performs the following calculations: - When `i = 1`, `sum = 0 + 1 = 1` - When `i = 2`, `sum = 1 + 2 = 3` - When `i = 3`, `sum = 3 + 3 = 6` - When `i = 4`, `sum = 6 + 4 = 10` - When `i = 5`, `sum = 10 + 5 = 15` Therefore, after the loop completes, the output printed by `cout` is `"The sum is 15."`. The correct answer is: **The sum is 15**.
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