with c programming language

Part 1.

In this program, you will simulate very large POSITIVE integers with arrays. Digits are

stored in an array starting with the least signicant at index 0. For example, an integer 123

is stored with 3 at index 0, 2 and index 1 and 1 at index 2. You may assume that the integers

to be added or multiplied has at most 20 digits. Write the following functions:

int add(int x[], int sizex, int y[], int sizey, int res[])

, which takes two arrays x and

y and their respective sizes, performs addition and stores the result into the array res.

Return the number of digits of the resulting sum (i.e. number of digits stored into res).

int multiply(int x[], int sizex, int y[], int sizey, int res[])

, which takes two arrays

x and y and their respective sizes, performs multiplication and stores the result into the

array res. Return the number of digits of the resulting product (i.e. number of digits

stored into res).

int divide(int x[], int sizex, int y[], int sizey, int res[])

, which takes two arrays

x and y and their respective sizes, performs

integer division

of x by y, and stores the

result into the array res. Return the number of digits of the result.

int mod(int x[], int sizex, int y[], int sizey, int res[])

, which takes two arrays x

and y and their respective sizes, performs of x mod y, and stores the result into the array

res. Return the number of digits of the result.

printNumber(int x[], int sizex)

, which prints the integer represented by array x.

a

main()

function that creates some numbers and tests the add, multiply, division and

mod operations.

Part 2.

Imagine a mouse that walks within a 50 by 50 array. The mouse holds a pen in one of two

positions: up or down. While the pen is up, the mouse does not write anything. While the

pen is down, the mouse marks each array location it passes by. You will read a sequence of

commands (one per line) from standard input (I suggest using an input textle and use input

redirection as you did in Lab 4) and walk the mouse. The mouse always starts at location

(0,0) with its pen up. Possible commands are:

1 Pen up

2 Pen down

3 Turn right

4 Turn left

1

5,n Move forward n spaces

6 Print the array, putting an asterisk for marked locations, putting a space for unmarked

locations. However put one extra space character between consecutive columns.

9 End of data marker.

For example, the following set of commands should draw a 10 by 10 array as:

* * * * * * * * * *

* *

* *

* *

* *

* *

* *

* *

* *

* * * * * * * * * *

2

5,10

3

5,10

3

5,10

3

5,10

1

6

9

Provide at least three input text les to draw interesting shapes.

Make sure to check for cases when the mouse tries to move outside the array, and do not let

it move beyond array boundaries.

2