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You don't have a solution for 4.12

You don't have a solution for 4.12

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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You don't have a solution for 4.12 in book C++ How to Program 10th edition. 

 

The image contains an exercise from a textbook featuring a C++ program, followed by instructions for subsequent exercises. Below is a transcription and explanation of the program: ### Exercise 4.12: Mystery.cpp **Title**: What Does this Program Do? What does the following program print? ```cpp #include <iostream> using namespace std; int main() { unsigned int x{1}; unsigned int total{0}; while (x <= 10) { int y = x * x; cout << y << endl; total += y; ++x; } cout << "Total is " << total << endl; } ``` #### Explanation: - **Lines 1-2**: The program includes the standard input/output stream library for C++. - **Line 3**: The standard namespace is used to avoid prefixing 'std::' with every standard library call. - **Line 5**: The main function begins, initializing two unsigned integers: `x` with the value 1 and `total` with the value 0. - **Lines 7-13**: A `while` loop is used to iterate as long as the value of `x` is less than or equal to 10. Each iteration calculates `y` as the square of `x`. - **Line 10**: Computes `y` as `x * x`. - **Line 11**: Outputs the value of `y`. - **Line 12**: Accumulates the value of `y` into `total`. - **Line 13**: Increments `x` by 1. - **Line 15**: After the loop ends, prints the accumulated total sum of all `y` values calculated during the loop. ### Instructions for Exercises 4.13 to 4.16: For these exercises, follow each of these steps: a) Read the problem statement. b) Formulate the algorithm using pseudocode and top-down, stepwise refinement. c) Write a C++ program. d) Test, debug, and execute the C++ program. #### Exercise 4.13: Gas Mileage The header for this exercise suggests it relates to calculating the mileage obtained from automobiles, addressing the concern drivers have about fuel efficiency. The text provides a framework for problem-solving in C++ programming, guiding students from understanding the problem to implementing and testing a solution
Transcribed Image Text:The image contains an exercise from a textbook featuring a C++ program, followed by instructions for subsequent exercises. Below is a transcription and explanation of the program: ### Exercise 4.12: Mystery.cpp **Title**: What Does this Program Do? What does the following program print? ```cpp #include <iostream> using namespace std; int main() { unsigned int x{1}; unsigned int total{0}; while (x <= 10) { int y = x * x; cout << y << endl; total += y; ++x; } cout << "Total is " << total << endl; } ``` #### Explanation: - **Lines 1-2**: The program includes the standard input/output stream library for C++. - **Line 3**: The standard namespace is used to avoid prefixing 'std::' with every standard library call. - **Line 5**: The main function begins, initializing two unsigned integers: `x` with the value 1 and `total` with the value 0. - **Lines 7-13**: A `while` loop is used to iterate as long as the value of `x` is less than or equal to 10. Each iteration calculates `y` as the square of `x`. - **Line 10**: Computes `y` as `x * x`. - **Line 11**: Outputs the value of `y`. - **Line 12**: Accumulates the value of `y` into `total`. - **Line 13**: Increments `x` by 1. - **Line 15**: After the loop ends, prints the accumulated total sum of all `y` values calculated during the loop. ### Instructions for Exercises 4.13 to 4.16: For these exercises, follow each of these steps: a) Read the problem statement. b) Formulate the algorithm using pseudocode and top-down, stepwise refinement. c) Write a C++ program. d) Test, debug, and execute the C++ program. #### Exercise 4.13: Gas Mileage The header for this exercise suggests it relates to calculating the mileage obtained from automobiles, addressing the concern drivers have about fuel efficiency. The text provides a framework for problem-solving in C++ programming, guiding students from understanding the problem to implementing and testing a solution
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