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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Concept explainers

Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo …
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical…
Question
In C++
**Problem with the Code Segment** The code segment attempts to calculate the square of a number using a function. Below is the provided code: ```cpp int square(int number) { return number * number; } int main() { cout << square(7.5); } ``` **Explanation:** 1. **Function Definition:** - The function `square` is defined to take an integer parameter `number` and return the square of `number`. 2. **Issue in the Code:** - The function `square` is called with a floating-point number `7.5` in the `main` function. - Since the `square` function is defined to accept an integer (`int`), passing a `double` will cause implicit type conversion. 3. **Potential Problems:** - The value `7.5` will be truncated to `7` when passed to the function, potentially leading to an incorrect result of `49` instead of `56.25`. **Resolution:** To fix this issue, the function should be revised to accept a `double` as an argument: ```cpp double square(double number) { return number * number; } int main() { cout << square(7.5); } ``` This modification ensures that the function can correctly handle and return the square of a floating-point number without truncation errors.
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Transcribed Image Text:**Problem with the Code Segment** The code segment attempts to calculate the square of a number using a function. Below is the provided code: ```cpp int square(int number) { return number * number; } int main() { cout << square(7.5); } ``` **Explanation:** 1. **Function Definition:** - The function `square` is defined to take an integer parameter `number` and return the square of `number`. 2. **Issue in the Code:** - The function `square` is called with a floating-point number `7.5` in the `main` function. - Since the `square` function is defined to accept an integer (`int`), passing a `double` will cause implicit type conversion. 3. **Potential Problems:** - The value `7.5` will be truncated to `7` when passed to the function, potentially leading to an incorrect result of `49` instead of `56.25`. **Resolution:** To fix this issue, the function should be revised to accept a `double` as an argument: ```cpp double square(double number) { return number * number; } int main() { cout << square(7.5); } ``` This modification ensures that the function can correctly handle and return the square of a floating-point number without truncation errors.
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