Written Assignment - Due: Name _________________________ Programming Project Ins

ID: 3849567 • Letter: W

Question

Written Assignment - Due:

Name _________________________

Programming Project

Instructions: Do all of the following questions. Please comment all lines as to show me what is happening.

Also make sure each script runs until the user decides to exit. Use your BASH Shell. In addition to

submitting a written copy of the code via the dropbox you MUST also create a folder in your UNIX account

named, project. In that folder should be all of the scripts you wrote for the +nal project, named +nal1,

+nal2, etc. You must also give me read and execute permissions. If you do not submit your code and allow

me to access your scripts you will not receive credit for the +nal project. Programs written in other

programming languages will not be accepted. Finally, all scripts MUST loop until the user is done using it.

1. Create a program that will ask the user if they want to add, subtract, multiply or divide two user inputted

numbers. Then give the response as follows:

The sum of number1 and number 2 is: Answer

The dierence of number1 and number2 is: Answer

The product of number1 and number2 is: Answer

The quotient of Number1 and Number2 is: Answer

Please note: ONLY IF the user enters 0 as the second number, let the user know that if they choose divide

that a division by zero error will occur.

2. Create a program that will allow a user to type in a number, while the program outputs that number in

words. Example, if you typed in 21, the computer would respond with twenty-one. Please allow the program

to work for 0-30. If a number typed in is not in that range, be sure to let the user know.

3. Write an If Statement that will allow the user to type in a month, then the program will respond with the

holiday in that month. (You only need to list 1 holiday per month.) If there is no holiday, then have the

computer respond there is no holiday in this month. Also let the user know if they typed a month that does

not exist.

4. Write a program that will allow a user to input as many numbers as the user wants (use "q" as the choice

that ends the user input). The program will then respond:

Highest Number: Answer

Lowest Number: Answer

Sum of the numbers: Answer

Average of the numbers: Answer

5. Create a Number guessing game. Have the computer pick a number from 0-60 using the Random

Number Generator I provided. Use the following code as the random number generator.

#Random Number Generator

RANGE=60

num=$RANDOM

let "num %= $RANGE"

echo $num

#RANGE=60 sets the RANDOM number from 0-60

#the echo $num prints the number

Then allow the user to guess at the number until the user gets it right. Please include the following:

a) Keep a counter of how many guesses were made, and then tell the user how many guesses it took.

b) As the user guesses, tell the user whether the guess is too high or too low.

6. Write a program that will allow a user to type in a number, then the number will either count up to the

number provided by the user or count down from that number. In addition, create a menu that will let the

user choose which counter they wish to use. In both cases that counter will either count down to 0, or start

counting from 0.

Instructions: Enter or paste your written work and/or click "Attachments" to upload

Explanation / Answer

NOTE: Out of 6 questions i have answered four questions and the rest i will share by tomorrow EOD.

Code.1)

#!/bin/bash

# Program to perform arithmetic operations like add, subtract, multiply and divide for the two numbers given

# reading input from user

echo "Enter number1? "

read num1

echo "Enter number2? "

read num2

# displaying the menu options

echo "Arithmetic Operations Menu"

echo "--------------------------"

echo "1. Addition"

echo "2. Subtract"

echo "3. Multiply"

echo "4. Divide"

echo "Enter the operation you want to do(1/2/3/4)? "

read op

# carrying out the operation based on the choice

if [ $op -eq 1 ]

then

sum=`expr $num1 + $num2`

echo "The sum of number1 and number2 is: $sum"

elif [ $op -eq 2 ]

then

diff=`expr $num1 - $num2`

echo "The difference of number1 and number2 is: $diff"

elif [ $op -eq 3 ]

then

prod=`expr $num1 * $num2`

echo "The product of number1 and number2 is: $prod"

elif [ $op -eq 4 ]

then

if [ $num2 -eq 0 ]

then

echo "Division by zero error will occur as number2 is 0. Do you want to continue(Y/N)? "

read choice

choice=`echo $choice|tr "[a-z]" "[A-Z]"`

if [ $choice == 'Y' ]

then

div=`expr $num1 / $num2`

echo "The division of number1 and number2 is: $div"

elif [ $choice == 'N' ]

then

echo "division is not continued as requested..."

else

echo "Wrong option. Please try options 'Y' or 'N'"

else

div=`expr $num1 / $num2`

echo "The division of number1 and number2 is: $div"

else

echo "Wrong option entered. You have to enter 1 or 2 or 3 or 4. Please try again"

Execution and output:

Unix Terminal> ./math.sh

Enter number1?

Enter number2?

Arithmetic Operations Menu

--------------------------

1. Addition

2. Subtract

3. Multiply

4. Divide

Enter the operation you want to do(1/2/3/4)?

The sum of number1 and number2 is: 38

Unix Terminal> ./math.sh

Enter number1?

Enter number2?

Arithmetic Operations Menu

--------------------------

1. Addition

2. Subtract

3. Multiply

4. Divide

Enter the operation you want to do(1/2/3/4)?

The difference of number1 and number2 is: 2

Unix Terminal> ./math.sh

Enter number1?

Enter number2?

Arithmetic Operations Menu

--------------------------

1. Addition

2. Subtract

3. Multiply

4. Divide

Enter the operation you want to do(1/2/3/4)?

The product of number1 and number2 is: 120

Unix Terminal> ./math.sh

Enter number1?

120

Enter number2?

Arithmetic Operations Menu

--------------------------

1. Addition

2. Subtract

3. Multiply

4. Divide

Enter the operation you want to do(1/2/3/4)?

The division of number1 and number2 is: 30

Unix Terminal> ./math.sh

Enter number1?

Enter number2?

Arithmetic Operations Menu

--------------------------

1. Addition

2. Subtract

3. Multiply

4. Divide

Enter the operation you want to do(1/2/3/4)?

Division by zero error will occur as number2 is 0. Do you want to continue(Y/N)?

expr: division by zero

The division of number1 and number2 is:

Unix Terminal> ./math.sh

Enter number1?

Enter number2?

Arithmetic Operations Menu

--------------------------

1. Addition

2. Subtract

3. Multiply

4. Divide

Enter the operation you want to do(1/2/3/4)?

Division by zero error will occur as number2 is 0. Do you want to continue(Y/N)?

division is not continued as requested...

Code.2)

#!/bin/bash

# program to convert numbers to words in the range of 0-30

# declaring an array of number words from zero to nineteen

declare -a words

words=(zero one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen)

# Asking user to enter a number from 0-30

echo "Enter a number from the range of 0-30? "

read num

# if number less than 19

if [ $num -lt 19 ]

then

echo "Number $num in words is : ${words[$num]}"

# if number greater than 20 and less than 30

elif [ $num -ge 20 ] && [ $num -lt 30 ]

then

# getting the remainder so we know about other word.

# for example if number is 21, snum variable below will be 1 that means we have to print "twenty" and first index of array words i.e. one

snum=`expr $num % 10`

if [ $snum -ne 0 ]

then

echo "Number $num in words is : Twenty-${words[$snum]}"

else

# if number is 20

echo "Number $num in words is : Twenty"

# if number is 30

elif [ $num -eq 30 ]

then

echo "Number $num in words is : Thirty"

# if number is not in the range of 0-30 this will execute

else

echo "Enter a number only from the range of 0-30"

Execution and output:

Unix Terminal> ./numToWord.sh