20. Compute mowing time Problem: A program is required to read from the screen the length and width of a rectangular house block, and the length and width of the rectangular house that has been built on the block. The algorithm should then compute and display the mowing time required to cut the grass around the house, at the rate of two square meters per minute. Work out the algorithm using pseudo code. Rearrange the following lines to suit the requirements. house_area = house_length* house_width Output mowing_time to screen Calculate_mowing_time block_area = block_length* block_width Get house_length, house_width END Get block_length, block_width Prompt operator for block_length, block_width mowing_area = block_area-house_area mowing_time = mowing_area/2 Prompt operator for house_length, house_width Implement the program in Java.

20. Compute mowing time Problem: A program is required to read from the screen the length and width of a rectangular house block, and the length and width of the rectangular house that has been built on the block. The algorithm should then compute and display the mowing time required to cut the grass around the house, at the rate of two square meters per minute. Work out the algorithm using pseudo code. Rearrange the following lines to suit the requirements. house_area = house_length* house_width Output mowing_time to screen Calculate_mowing_time block_area = block_length* block_width Get house_length, house_width END Get block_length, block_width Prompt operator for block_length, block_width mowing_area = block_area-house_area mowing_time = mowing_area/2 Prompt operator for house_length, house_width Implement the program in Java.

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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Concept explainers

Control structures

Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.

Switch Statement

The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.

Question

H1.

20. Compute mowing time
Problem: A program
is required to read from the screen the length and width of a rectangular
house block, and the length and width of the rectangular house that has been built on the
block. The algorithm should then compute and display the mowing time required to cut the
grass around the house, at the rate of two square meters per minute.
Work out the algorithm using pseudo code.
Rearrange the following lines to suit the requirements.
house_area = house_length * house_width
Output mowing_time to screen
Calculate_mowing_time
block_area
Get house_length, house_width
END
= block_length * block_width
Get block_length, block_width
Prompt operator for block_length, block_width
mowing_area = block area -house_area
mowing _time = mowing_area/2
Prompt operator for house_length, house_width
Implement the program in Java.

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