[Solved] KIT107 Assignment1

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 5771) and Actinium group (elements 89103) 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:
  • 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
  • Each variable declaration should be on a single line and should be commented
  • 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