KIT107 Programming Assignment 1 Solved

KIT107 Programming Assignment 1

Background
 

  

 

From www.wikipedia.org: The periodic table is a tabular arrangement of the 118 chemical elements, organized on the basis of their atomic numbers, electron configurations (electron shell model), and recurring chemical properties. Elements are presented in order of increasing atomic number (the number of protons in the nucleus). The standard form of the table consists of a grid of elements laid out in 18 columns and 7 rows, with a double row of elements below that.  The rows of the table are called periods; the columns are called groups.  

Program specification
You must write a C program to print an excerpt of the periodic table of elements.

 

First you should obtain the following information from the user:

•       whether the ‘Lanthanum’ group (elements 57–71) and ‘Actinium’ group (elements 89–103) should be printed — the default is no;

•       the atomic number of the first element to display — the default is 1 and should be used whenever a value less than 1 or greater than 118 is given; and

•       the atomic number of the last element to display — the default is 118 and should be used whenever a number smaller than the first number or larger than 118 is given.

 

Once these values have been entered the program should display a table with the elements within the specified range displayed in their appropriate group.  Any element in that range from the ‘Lanthanum’ and ‘Actinium’ groups should only be displayed if the user has requested this; there is no need to indent these, they can simply be displayed after the table.

 

An example of the output is as follows:

 

Periodic Table Printer 

 

Print the Lanthanum/Actinium groups if necessary [Y/N]: y 

Enter number of first element to print: 1 

Enter number of last element to print: 0 

...118 assumed... 

001 H                                                                                                                                   002 He 

003 Li  004 Be                                                                                  005 B   006 C   007 N   008 O   009 F   010 Ne 

011 Na  012 Mg                                                                                  013 Al  014 Si  015 P   016 S   017 Cl  018 Ar 

019 K   020 Ca  021 Sc  022 Ti  023 V   024 Cr  025 Mn  026 Fe  027 Co  028 Ni  029 Cu  030 Zn  031 Ga  032 Ge  033 As  034 Se  035 Br  036 Kr 

037 Rb  038 Sr  039 Y   040 Zr  041 Nb  042 Mo  043 Tc  044 Ru  045 Rh  046 Pd  047 Ag  048 Cd  049 In  050 Sn  051 Sb  052 Te  053 I   054 Xe 

055 Cs  056 Ba          072 Hf  073 Ta  074 W   075 Re  076 Os  077 Ir  078 Pt  079 Au  080 Hg  081 Tl  082 Pb  083 Bi  084 Po  085 At  086 Rn 

087 Fr  088 Ra          104 Rf  105 Db  106 Sg  107 Bh  108 Hs  109 Mt  110 Ds  111 Rg  112 Cn  113 Uut 114 Fl  115 Uup 116 Lv  117 Uus 118 Uuo 

 

 

057 La  058 Ce  059 Pr  060 Nd  061 Pm  062 Sm  063 Eu  064 Gd  065 Tb  066 Dy  067 Ho  068 Er  069 Tm  070 Yb  071 Lu 

089 Ac  090 Th  091 Pa  092 U   093 Np  094 Pu  095 Am  096 Cm  097 Bk  098 Cf  099 Es  100 Fm  101 Md  102 No  103 Lr 

 

A second example is:

 

Periodic Table Printer 

 

Print the Lanthanum/Actinium groups if necessary [Y/N]: X 

...N assumed... 

Enter number of first element to print: 56 

Enter number of last element to print: 76 

        056 Ba          072 Hf  073 Ta  074 W   075 Re  076 Os 

 

You will need printf() and scanf() from <stdio.h, atoi() from <stdlib.h, and strcmp() from <string.h.  You will also need to use if and if-else statements, and for and while loops.

 

To help you, a ‘table’ (i.e. an array of arrays) can be defined consisting of elements which are themselves arrays.  Each element of the array can be a pair in which the first value (element 0) is the chemical symbol of the element and the second value (element 1) is the group to which it belongs.  The index of the element in the array is one less than its atomic number.  For example Helium is chemical element 2.  It has symbol “He” and belongs to group “18”.  It occurs at position 1 in the table.  The ‘Lanthanum’ group appears with group numbers ranging from –11 to – 25; the ‘Actinium’ group appears with group numbers ranging from –31 to –45.

 

Copy and paste the following into your program to define all chemical elements:

char *table[118][2]={{"H","1"},{"He","18"},{"Li","1"},{"Be","2"},{"B","13"},{"C","14"},{"N","15"},{"O","16"},{"F","17"},{"Ne","18"}, 

      {"Na","1"},{"Mg","2"},{"Al","13"},{"Si","14"},{"P","15"},{"S","16"},{"Cl","17"},{"Ar","18"},{"K","1"},{"Ca","2"}, 

      {"Sc","3"},{"Ti","4"},{"V","5"},{"Cr","6"},{"Mn","7"},{"Fe","8"},{"Co","9"},{"Ni","10"},{"Cu","11"},{"Zn","12"},       {"Ga","13"},{"Ge","14"},{"As","15"},{"Se","16"},{"Br","17"},{"Kr","18"},{"Rb","1"},{"Sr","2"},{"Y","3"},{"Zr","4"},  

      {"Nb","5"},{"Mo","6"},{"Tc","7"},{"Ru","8"},{"Rh","9"},{"Pd","10"},{"Ag","11"},{"Cd","12"},{"In","13"},{"Sn","14"}, 

      {"Sb","15"},{"Te","16"},{"I","17"},{"Xe","18"},{"Cs","1"},{"Ba","2"},{"La","‐11"},{"Ce","‐12"},{"Pr","‐13"},{"Nd","‐14"}, 

     {"Pm","‐15"},{"Sm","‐16"},{"Eu","‐17"},{"Gd","‐18"},{"Tb","‐19"},{"Dy","‐20"},{"Ho","‐21"},{"Er","‐22"},{"Tm","‐23"},{"Yb","‐24"}, 

      {"Lu","‐25"},{"Hf","4"},{"Ta","5"},{"W","6"},{"Re","7"},{"Os","8"},{"Ir","9"},{"Pt","10"},{"Au","11"},{"Hg","12"},  

      {"Tl","13"},{"Pb","14"},{"Bi","15"},{"Po","16"},{"At","17"},{"Rn","18"},{"Fr","1"},{"Ra","2"},{"Ac","‐31"},{"Th","‐32"}, 

     {"Pa","‐33"},{"U","‐34"},{"Np","‐35"},{"Pu","‐36"},{"Am","‐37"},{"Cm","‐38"},{"Bk","‐39"},{"Cf","‐40"},{"Es","‐41"},{"Fm","‐42"}, 

      {"Md","‐43"},{"No","‐44"},{"Lr","‐45"},{"Rf","4"},{"Db","5"},{"Sg","6"},{"Bh","7"},{"Hs","8"},{"Mt","9"},{"Ds","10"}, 

      {"Rg","11"},{"Cn","12"},{"Uut","13"},{"Fl","14"},{"Uup","15"},{"Lv","16"},{"Uus","17"},{"Uuo","18"}}; 

Program Style
The program you write for this assignment must be in a single file called assig_one117.c.  There should be at least three functions including the main() function within this file.

 

Your program should follow the following coding conventions:

•       const variable identifiers should be used as much as possible, should be written all in upper case and should be declared before all other variables

•       #defined symbols should be used for constant values when const is inappropriate — the length of arrays (for example)    variable identifiers should start with a lower case letter

•       every if and if-else statement should have a block of code (i.e. collections of lines surrounded by { and }) for both the if part and the else part (if used)

•       every do, for, and while loop should have a block of code (i.e. {}s)

•       the keyword continue should not be used

•       the keyword break should only be used as part of a switch statement

•       opening and closing braces of a block should be aligned

•       all code within a block should be aligned and indented 1 tab stop (or 4 spaces) from the braces marking this block        global variables should be used sparingly with parameter lists used to pass information in and out of functions.

•       commenting:

o   There should be a block of header comment which includes at least

§  file name

§  student names

§  student identity numbers

§  a statement of the purpose of the program

§  date

§  the percentage of the work completed by the authors — 50:50 is expected, reasons should be given if it is more/less than this

o   Each variable declaration should be on a single line and should be commented

o   There should be a comment identifying groups of statements that do various parts of the task o     Comments should describe the strategy of the code and should not simply translate the C into English

What and how to submit 
What to submit
Paper submission
    A signed cover page (blanks can be collected from the ICT discipline office or from the ICT discipline web site)     A print-out of the source code file for the program. Your assignment will not be fully marked unless this is present.

Electronic submission
    The source code file which must be named assig_one117.c How to submit 

Paper submission
    Firmly staple together all of the required documents (with the signed cover page on top) and place them in the appropriate submissions box near the ICT Help Desk.

Electronic submission
•       Log in to MyLO and navigate to the Assignments tool under the Assessments icon in the top tool bar.

•       Select Assignment 1 from the list of available drop-boxes.

•       Click on Add a File and follow the instructions to attach your source code file (assig_one117.c) and then click Add.  Then click Submit.

•       If you want to resubmit, rename your source code as assign_one117V2.c and repeat the submission process.

•       You may submit an entire Visual Studio project which contains the assign_one117.c source file if you wish, or just the source file.

 

Please note: only one paper and electronic submission is required for the pair. 

             

Marking scheme 
Task/Topic 
Maximum mark 
Program submitted in form required 
 
Program submitted correctly 
1 
Program compiles without error and runs to completion with test data 
1 
Program operates as specified 
 
Prompts user for required information (in correct order)  
2 
Defaults for required information used as appropriate 
2 
Produces rows for valid range of elements 
2 
Produces columns for valid range of elements 
3 
Produces rows for ‘Lanthanum’ and ‘Actinium’ groups as appropriate 
2 
Formatting is correct (decimal places and justification) 
2 
Program contains at least three functions 
3 
Program Style 
 
Uses constants where appropriate 
1 
Uses symbols where necessary 
1 
Does not unnecessarily repeat tests or have other redundant/confusing code 
2 
Uses pre-existing methods (printf/scanf/atoi/strcmp) 
1 
Coding style and internal documentation 

NOTE: To obtain any of the marks for this section you must submit a copy of your source code 
 
Uses correctly the C naming conventions 
2 
Alignment of code and use of white space makes code readable 
2 
Always uses blocks in branch and loop constructs 
2 
Meaningful identifiers 
2 
Header comments for the program (author, date etc) 
2 
Each variable declaration is commented 
2 
Comments within the code indicate the purpose of sections of code (but DO NOT just duplicate what the code says) 
1 
 

             

Plagiarism and Cheating: 

Practical assignments are used in the ICT discipline for students to both reinforce and demonstrate their understanding of material which has been presented in class. They have a role both for assessment and for learning.  It is a requirement that work you hand in for assessment is substantially your own.

Working with others
One effective way to grasp principles and concepts is to discuss the issues with your peers and/or friends. You are encouraged to do this. We also encourage you to discuss aspects of practical assignments with others. However, once you have clarified the principles, you must express them in writing or electronically entirely by yourself in your pair. In other words you and your partner must develop the algorithm to solve the problem and write the program which implements this algorithm yourselves.  You can discuss the question, but not the solution.

Cheating
•       Cheating occurs if you claim work as your own when it is substantially the work of someone else.

•       Cheating is an offence under the Ordinance of Student Discipline within the University.  Furthermore, the ICT profession has ethical standards in which cheating has no place.

•       Cheating involves two or more parties.

o   If you allow written work, computer listings, or electronic version of your code to be borrowed or copied by another student you are an equal partner in the act of cheating.

o   You should be careful to ensure that your work is not left in a situation where it may be stolen by others.

•       Where there is a reasonable cause to believe that a case of cheating has occurred, this will be brought to the attention of the unit lecturer. If the lecturer considers that there is evidence of cheating, then no marks will be given to any of the students involved. The case will be referred to the Head of School for consideration of further action.