Week 9 Homework

There is a short introduction and cheat sheat available here, which explains the basics of the C programming language and its compilation process on Linux.

Problem 1 (Mario)🔗

Let's recreate the pyramids from Super Mario in text:

     #
    ##
   ###
  ####
 #####
######

So, the program should prompt the user to input the height of the pyramid and then output the pyramid of the specified height:

$ ./mario
Height: 6
     #
    ##
   ###
  ####
 #####
######

Other examples:

$ ./mario
Height: 2
 #
##

$ ./mario
Height: 1
#

Problem 2🔗

Create a program that takes two integer numbers as an input from the user (a ≤ b) and for every number in the interval [a; b] outputs:

• the number in plain text english if it's less than 10
• otherwise, whether it's odd or even

$ ./interval
Input a: 8
Input b: 11

eight
nine
even 
odd

Other examples:

$ ./interval
Input a: 13
Input b: 15

odd
even
odd

$ ./interval
Input a: 1
Input b: 4

one
two
three
four

Problem 3🔗

Develop a program which is going to output English text according to these rules:

• First, all the whitespace are deleted
• Let the length of the text taken as an input be L. Then, output the text as a table with the number of rows and columns, where [√L] ≤ rows ≤ columns ≤ [√L] + 1 ([x] is an integer part of the number)

For example, the message capital is an abstract parasite, an insatiable vampire and zombie maker; but the living flesh it converts into dead labor is ours, and the zombies it makes are us has a length of 134 symbols without the whitespace, we can output it in a table 12 x 12.

capitalisan
abstractpar
asite,anins
atiablevamp
ireandzombi
emaker;butt
helivingfle
shitconvert
sintodeadla
borisours,a
ndthezombie
sitmakesare
us

You have to check whether rows × columns ≥ L and if there are several possible rectangles choose the one with the smaller area.

Other examples:

$ ./table
Input your text: it is time that lived moments replace the dead memory that has stamped acquaintance with the hidden restriction that nothing can ever be experienced.

Characters total: 126
Rows: 11
Columns: 12

itistimethat
livedmoments
replacethede
admemorythat
hasstampedac
quaintancewi
ththehiddenr
estrictionth
atnothingcan
everbeexperi
enced.

Problem 4🔗

Develop a program which, taking two integer arrays as its input will create a new integer array. The new array consists of the digits of the sum of the original two arrays' elements.

So, for the example if given two arrays {23, 5, 2, 7, 87} and {4, 67, 2, 8}, the new array will look like this {2, 7, 7, 2, 4, 1, 5, 8, 7}.

If the array is empty, just consider the respective elements as zeros. Then, if given two arrays { } and {4, 67, 3, 8} then the new array will look like {4, 6, 7, 3, 8}.

An example usage:

$ ./arrays
Input the length of the first array: 5
Input the numbers: 5
23
5
2
7
87

Input the length of the second array: 5
Input the numbers: 4
4
67
2
8

The output array: 
2 7 7 2 4 1 5 8 7