2a. If the user enters an invalid operator, output a message telling the user the input is invalid and re-prompt the user for the operation again. Sample Output for Scientific mode: Enter '+' for addition, '-' for subtractions, '*' for multiplication, '/' for division, 'sin' for sin x, 'cos' for cos x, 'tan' for tan x: division Invalid operator division Enter '+' for addition, '-' for subtractions, '*' for multiplication, '/' for division, 'sin' for sin x, 'cos' for cos x, 'tan' for tan x: +

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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This requires a java code

2a. If the user enters an invalid operator, output a message telling the user the input is invalid
and re-prompt the user for the operation again.
Sample Output for Scientific mode:
Enter '+' for addition, '-' for subtractions, '*' for multiplication, '/' for division,
for sin X, 'cos' for cos x, 'tan' for tan x:
division
'sin'
Invalid operator division
Enter + for addition, '-' for subtractions, '*' for multiplication, '/' for division, 'sin'
for sin x, 'cos' for cos x, 'tan' for tan x:
+
Transcribed Image Text:2a. If the user enters an invalid operator, output a message telling the user the input is invalid and re-prompt the user for the operation again. Sample Output for Scientific mode: Enter '+' for addition, '-' for subtractions, '*' for multiplication, '/' for division, for sin X, 'cos' for cos x, 'tan' for tan x: division 'sin' Invalid operator division Enter + for addition, '-' for subtractions, '*' for multiplication, '/' for division, 'sin' for sin x, 'cos' for cos x, 'tan' for tan x: +
1. The calculator program will first ask the user for the mode to operate in (Standard or Scientific)
Sample Output:
Enter the calculator mode: Standard/Scientific?
Scientific
2. The program should then ask the user for the operation to execute (+, -r /, sin x, cos x, tan
x)
Sample Output for Standard mode:
The calculator will operate in standard mode.
Enter '+' for addition, '-' for subtractions,
'*'
*
I
for multiplication, '/' for division
Sample Output for Scientific mode:
Enter '+' for addition, '-' for subtractions, '*' for multiplication, '/' for division, 'sin'
'
cos for cos X, 'tan ' for tan x:
for sin x,
sin
Transcribed Image Text:1. The calculator program will first ask the user for the mode to operate in (Standard or Scientific) Sample Output: Enter the calculator mode: Standard/Scientific? Scientific 2. The program should then ask the user for the operation to execute (+, -r /, sin x, cos x, tan x) Sample Output for Standard mode: The calculator will operate in standard mode. Enter '+' for addition, '-' for subtractions, '*' * I for multiplication, '/' for division Sample Output for Scientific mode: Enter '+' for addition, '-' for subtractions, '*' for multiplication, '/' for division, 'sin' ' cos for cos X, 'tan ' for tan x: for sin x, sin
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