Homework SourseCS PRJ 2 This needs to be written in C data structures and a
CS PRJ 2:
This needs to be written in C++ data structures and algorithms. Please Wrie comments explaining methods etc and also write a short algorithm before doing it.
Thanks.
Instructions:
Build a Weather Program:
Create a simple weather app. You should be able to:
1. Select from a list of U.S. cities
2. Should show the current weather for selected city (use the Yahoo Weather API https://developer.yahoo.com/weather/)
3. Should also show weather for the next 10 days
4. For each day (current and next 10 days) display the following:
· The date (e.g. \"Monday, November 21st, 2016\")
· High temp
· Low temp
· Description (e.g. \"Partly Cloudy\")
5. Write a brief Paragraph explaining the data structures/algorithms used and description
Solution
Code for Weather Temperature Recording using C++:
#include <iostream.h>
#include <fstream.h>
#include <iomanip.h>
#include <math.h>
#include <conio.h>
#include <string.h>
fstream file;
char year[5]=\"\";
//Non-Member function to find month, to avoid user data-entrychar *returnMonth(int m){
switch(m){
case 1 : return(\"January\");
case 2 : return(\"February\");
case 3 : return(\"March\");
case 4 : return(\"April\");
case 5 : return(\"May\");
case 6 : return(\"June\");
case 7 : return(\"July\");
case 8 : return(\"August\");
case 9 : return(\"September\");
case 10 : return(\"October\");
case 11 : return(\"November\");
case 12 : return(\"December\");
}
return(\"Invalid\");
}
//Non-Member functions, checks for whether file is loaded or not//it returns 1 if not loaded and 0 otherwise.int checkFile(){
if(file==NULL){
cout<<\"\ There is No Data to Display\ \";
getch();
return(1);
}
return(0);
}
class weather
{
public:
double avgtemp[12];
char month[12][20];
weather();
void getdata(int m){ //simple getdata...
strcpy(month[m],returnMonth(m)); //avoiding user to input
cout<<\"\ Enter temperature for \"<<month[m]<<\" : ?\\b\";
cin>>avgtemp[m];
}
void displaydata(int m){ //simple displaydata
cout<<setw(20)<<setprecision(2)<<setiosflags(ios::left)
<<setiosflags(ios::showpoint)
<<month[m]<<setw(10)<<setiosflags(ios::right)<<avgtemp[m];
}
void displaytemp(int i){ //Display only Temperature data
cout<<setw(10)<<setprecision(2)<<setiosflags(ios::right)
<<setiosflags(ios::showpoint)<<avgtemp[i];
}
double returntemp(int i){
return(avgtemp[i]);
}
void loadfile();
void displaytempscale(); //for displaying temperature scalevoid updatedata(int m,double t)
{
strcpy(month[m],returnMonth(m));
avgtemp[m]=t;
}
int validate(double t){ //Validate entered temperature (change to suit ur requirement).if(t>55 || t < (-20))
return(1); //states that invalid entryelsereturn(0); //valid entry
}
};
weather :: weather(){ //Constructor to intialize objectfor(int i=0;i<12;i++)
{
avgtemp[i]=0;
month[i][0]=NULL;
}
}
void weather :: loadfile(){ //for Selecting Year or creation of new year file.
clrscr();
file.close(); //It is required when trying to open different year files,//while there is already loaded any year file.char filename[20]=\"\";
cout<<\"\ *****Select a Year to Work With*****\ \ \";
cout<<\"Enter Year (eg: 2001) : ?\\b\";
cin>>year;
strcat(filename,\"c:\\\\\"); //Here i am assuming that path must be c:\\
strcat(filename,\"data\"); //if u wan\'t to skip that criteria just remove this lines.
strcat(filename,year);
strcat(filename,\".dat\");
file.open(filename,ios::ate|ios::nocreate|ios::in|ios::out|ios::binary);
if(file==NULL){
char ans;
cout<<\"\ File Dose Not Exist\ \"
<<\"Do you wan\'t to create it! (y or n) N : ?\\b\"; //By default No
ans=getche();
if(ans==\'y\'|| ans==\'Y\'){
file.open(filename,ios::ate|ios::in|ios::out|ios::binary);
cout<<\"\ \ File Created Successfully\";
}
else{
file;
cout<<\"\ \ Fail to load data file\";
}
}
else if(file!=NULL){
cout<<\"\ Data File is successfully loaded\";
}
getch();
}
void weather :: displaytempscale(){
int i,c=0;
cout<<\"\ \ \";
for(i=1;i<=70;i++)
{
if(i<=10)
cout<<\"0\";
else if(i<=20)
cout<<\"1\";
else if(i<=30)
cout<<\"2\";
else if(i<=40)
cout<<\"3\";
else if(i<=50)
cout<<\"4\";
else if(i<=60)
cout<<\"5\";
else if(i<=70)
cout<<\"7\";
}
cout<<\"\ \";
for(i=1;i<=7;i++)
{
for(c=0;c<10;c++)
cout<<c;
}
cout<<\"\ \";
}
void intro()
{
clrscr();
cout<<\"\ \ \ \ \ \ \ \ \\t\\t\\t\";
cout<<\"\\t\\t\\tEmail : admin@syntax-example.com\ \"
<<\"\\t\\t\\tWebsite : http://www.syntax-example.com\";
cout<<\"\ \ \\t\\t\\t\";
cout<<\"Thanks for using this software.\";
getch();
}
void main(){
char choice=\'1\';
int cnt,i,j,iNum,totstars=0,location,m;
double decNum,dNum,high=0,low=99999,avg=0,t;
char c;
weather obj;
file.close();
do{
clrscr();
cout<<\"\ *****Main Menu*****\ \";
cout<<\"1> Select a year to work with\ \"
<<\"2> Display data as Table\ \"
<<\"3> Display data as horizontal histogram\ \"
<<\"4> Display Yearly Statistics to date\ \"
<<\"5> Record Data\ \"
<<\"6> Change Data\ \"
<<\"7> Save Data\ \"
<<\"0> Exit\ \"
<<\"Please enter a number (0...7) => \";
choice=getche();
//again for sake of simplicity i have directly return code
//in case brace rather than going for member-function.
switch(choice){
case \'0\' : intro();
goto out;
case \'1\' : obj.loadfile();
break;
case \'2\' : clrscr();
cout<<\"\ *****Display Data as a Table*****\ \ \";
if(checkFile()){
goto endtable;
}
cout<<\"\ Table of Temperature data for \"<<year;
cout<<\"\ \ \";
file.seekg(0,ios::end);
cnt=file.tellg();
cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
file.seekg(0,ios::beg);
for(i=1;i<=cnt;i++)
{
if(i==1)
cout<<\"\ Quater 1 : \";
else if(i==4)
cout<<\"\ Quater 2 : \";
else if(i==7)
cout<<\"\ Quater 3 : \";
else if(i==10)
cout<<\"\ Quater 4 : \";
file.read((char *)&obj, sizeof(obj));
if(!file.eof()){
obj.displaytemp(i);
}
file.clear();
}
getch();
endtable:
break;
case \'3\' : clrscr();
cout<<\"\ *****Display Data as a Horizontal Histogram*****\ \ \";
if(checkFile()){
goto endhistogram;
}
cout<<\"Histogram of Temperature data for \"<<year;
obj.displaytempscale();
file.seekg(0,ios::end);
cnt=file.tellg();
cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
file.seekg(0,ios::beg);
for(i=1;i<=cnt;i++)
{
cout<<\"\ \"<<setw(15)<<setiosflags(ios::left)<<returnMonth(i);
file.read((char *)&obj, sizeof(obj));
if(!file.eof()){
decNum=obj.returntemp(i);
iNum=floor(decNum);
dNum=decNum-iNum; //for finding decimal part.
totstars=iNum;
if(dNum >= 0.5)
totstars++;
for(j=1;j<=totstars;j++)
cout<<\"*\";
cout<<\" \"<<totstars;
}
file.clear();
}
obj.displaytempscale();
getch();
endhistogram:
break;
case \'4\' : clrscr();
cout<<\"\ *****Display Yearly Statistics to Date*****\ \ \";
if(checkFile()){
goto endstatus;
}
cout<<\"Temperature Statistics data for \"<<year;
cnt=file.tellg();
cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
file.seekg(0,ios::beg);
high=avg=0;
low=99999;
for(i=1;i<=cnt;i++)
{
file.read((char *)&obj, sizeof(obj));
double tmp=obj.returntemp(i);
if(!file.eof()){
if(high < tmp)
high=tmp;
if(low > tmp)
low=tmp;
avg=avg+tmp;
}
file.clear();
}
avg=avg/double(cnt);
cout<<\"\ \ Highest Monthly Average : \"<<high;
cout<<\"\ Lowest Monthly Average : \"<<low;
cout<<\"\ Average Yearly Temperature : \"<<avg;
getch();
endstatus:
break;
case \'5\' : clrscr();
cout<<\"\ *****Record Data*****\ \ \";
if(checkFile()){
goto endRecord;
}
else{
cnt=file.tellg();
cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
if(cnt==12)
cout<<\"\ \ Data-Entry of \"<<year<<\" is already been done\ \";
for(i=cnt+1;i<=12;i++)
{
enteragain:
cout<<\"\ Do u wan\'t to enter data for\"<<returnMonth(i)<<\" (Y or N) Y : ?\\b\";
c=getche();
if(c==\'n\' || c==\'N\')
goto endRecord;
obj.getdata(i);
if(obj.validate(obj.returntemp(i)))
{
cout<<\"\ Invalid Data Entry\ \";
goto enteragain;
}
cin.get(c);
file.write((char *) &obj, sizeof(obj));
}
}
getch();
endRecord:
break;
case \'6\' : clrscr();
cout<<\"\ *****Change Data*****\ \ \";
if(checkFile()){
goto endchange;
}
else{
cnt=file.tellg();
cnt=cnt/sizeof(obj); //cnt contains how many records previously recorded
tryagain:
cout<<\"\ Enter Month (in digit) whose temperature is to be changed : ?\\b\";
cin>>m;
if(m <= 0 || m > cnt){
cout<<\"\ \ Invalid Month\ \";
getch();
goto tryagain;
}
tempagain:
cout<<\"\ Enter Temperature : ?\\b\";
cin>>t;
if(obj.validate(t))
{
cout<<\"\ Invalid Data Entry\ \";
goto tempagain;
}
file.seekg(0,ios::beg);
location= (m-1) * sizeof(obj);
file.seekp(location);
obj.updatedata(m,t);
cin.get(c);
file.write((char *) &obj, sizeof(obj))<<flush;
}
endchange:
break;
case \'7\' : clrscr();
cout<<\"\ *****Store the Current Data*****\ \ \";
if(checkFile()){
goto endsave;
}
flush(file);
cout<<\"\ Data in Memory is Saved successfully\ \";
getch();
endsave:
break;
default : cout<<\"\ \ Invalid Input\ \";
getch();
}
}while(choice!=\'0\');
flush(file);
file.close();
clrscr();
out:
}
