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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Question
This program tabulates scores for a figure skating competition that has four parts: 1. The short dance, which is worth 25% of the final score 2. The free skate, which is worth 50% of the final score 3. The partner dance, which is worth 10% of the final score 4. The original performance, which is worth 15% of the final score The array `weights` stores values that represent how much of the final score each of the four parts is worth. Complete this program to read in each of the four scores as `float` values, multiply each score by its corresponding weight, and then sum up the weighted scores to get the participant’s final score as a `float` value. ```cpp #include <iostream> #include <vector> using namespace std; const int WEIGHT_SIZE = 4; int main() { float weights[WEIGHT_SIZE] = {0.25, 0.50, 0.10, 0.15}; float total = 0.0; // TODO: Write your code here cout << "Final Score: " << total << endl; } ```
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Transcribed Image Text:This program tabulates scores for a figure skating competition that has four parts: 1. The short dance, which is worth 25% of the final score 2. The free skate, which is worth 50% of the final score 3. The partner dance, which is worth 10% of the final score 4. The original performance, which is worth 15% of the final score The array `weights` stores values that represent how much of the final score each of the four parts is worth. Complete this program to read in each of the four scores as `float` values, multiply each score by its corresponding weight, and then sum up the weighted scores to get the participant’s final score as a `float` value. ```cpp #include <iostream> #include <vector> using namespace std; const int WEIGHT_SIZE = 4; int main() { float weights[WEIGHT_SIZE] = {0.25, 0.50, 0.10, 0.15}; float total = 0.0; // TODO: Write your code here cout << "Final Score: " << total << endl; } ```
# Understanding the Mode of a Dataset ## Definition The **mode** of a dataset is the item that appears most frequently. ## Instructions You are required to write a program to read in numbers between 1 and 100 and then report the mode. If more than one number appears most frequently, choose the highest number. The program's output should be in the following format: ``` The most frequent value was 42, appearing 9 times. ``` ## Sample Code Below is a snippet of C++ code with the basic structure to find the mode of the entered numbers. ```cpp #include <iostream> using namespace std; int main() { // TODO: Write your code here cout << "The most frequent value was " << 50 << ", appearing " << 8 << " times." << endl; } ``` ### Explanation - **Include Directives**: `#include <iostream>` is used to include the standard input-output stream library. - **Namespace**: The `using namespace std;` line allows the program to use all the entities in the `std` namespace. - **Main Function**: This is the entry point of the program. - A comment indicates where the code to find the mode should be inserted. - The `cout` statement is used to output the most frequent value found and how many times it appeared. ## Visualization There is a visual representation (pictured as a handwriting scribble) beside the code. It might suggest a flow or thought process, but it appears to be non-informative or illustrative for technical purposes.
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Transcribed Image Text:# Understanding the Mode of a Dataset ## Definition The **mode** of a dataset is the item that appears most frequently. ## Instructions You are required to write a program to read in numbers between 1 and 100 and then report the mode. If more than one number appears most frequently, choose the highest number. The program's output should be in the following format: ``` The most frequent value was 42, appearing 9 times. ``` ## Sample Code Below is a snippet of C++ code with the basic structure to find the mode of the entered numbers. ```cpp #include <iostream> using namespace std; int main() { // TODO: Write your code here cout << "The most frequent value was " << 50 << ", appearing " << 8 << " times." << endl; } ``` ### Explanation - **Include Directives**: `#include <iostream>` is used to include the standard input-output stream library. - **Namespace**: The `using namespace std;` line allows the program to use all the entities in the `std` namespace. - **Main Function**: This is the entry point of the program. - A comment indicates where the code to find the mode should be inserted. - The `cout` statement is used to output the most frequent value found and how many times it appeared. ## Visualization There is a visual representation (pictured as a handwriting scribble) beside the code. It might suggest a flow or thought process, but it appears to be non-informative or illustrative for technical purposes.
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