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

Variables and Constant
Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sort…
Question
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please help WITH ATTACHED... it is C++... 

Basic Arithmetic



You need to buy paint for the floor of a rectangular room.
The given program takes the room's length and width as input.

Task
Complete the program to calculate and output the area of the room.

Sample Input
5.4
2.3

Sample Output
12.42

Hint
To calculate the area, multiply the length by the width. In this case 5.4*2.3=12.42. 

Problem Results 1 #include <iostream> using namespace std; 3 2 Test Case 1 int main() { //sides of the room double length; double width; //cin >> length; //cin >> width; 5 Input 7 5.4 2.3 10 //output the area double area = 5.4 * 2.3; cout << area <<endl; 11 Your Output 12 13 12.42 14 15 return 0; 16 } Expected Output 12.42 Test Case 2 Input 3 4 Your Output 12.42 Expected Output 12 Test Case 3 Input 2.5 3.5 Your Output 12.42 Expected Output 8.75
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Transcribed Image Text:Problem Results 1 #include <iostream> using namespace std; 3 2 Test Case 1 int main() { //sides of the room double length; double width; //cin >> length; //cin >> width; 5 Input 7 5.4 2.3 10 //output the area double area = 5.4 * 2.3; cout << area <<endl; 11 Your Output 12 13 12.42 14 15 return 0; 16 } Expected Output 12.42 Test Case 2 Input 3 4 Your Output 12.42 Expected Output 12 Test Case 3 Input 2.5 3.5 Your Output 12.42 Expected Output 8.75
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