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#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>
#include <algorithm>
using namespace std;
const int MAX_ID = 3345; // Maximum siteIDNumber
const int MAX_WINDSPEED = 22; // Maximum windSpeed
const int MAX_DAY = 16; // Maximum dayOfMonth
const int MAX_TEMP = 30; // Maximum temperature
const int MAX = 10; // Max array size
struct measured_data_t
{
int siteIDNumber, dayOfMonth,
windSpeed, temperature;
};
int main()
{
measured_data_t data[MAX];
char temp[10];
measured_data_t a_measured_data;
int i,n,var;
int max[3]={0,0,0},min[3],diff[3],avg[3]={0,0,0},count[3]={0,0,0};
n = 0;
cout << " Weather and Climate Research Data " << endl;
cout << " Temp variation & average wind speed " << endl;
FILE *infilep; /* file pointer */
infilep = fopen(" C:\Users\David\Desktop\data.txt ", "r"); /* open file in read mode */
if (infilep == NULL)
{
cout << " Cannot Open File  Check File Name " << endl;
}
for (i=0;i<8;i++) /* To just skip the first line */
{
fscanf(infilep,"%s",&temp);
}
for ( i=0; i; )
{
fscanf(infilep, "%4d %3d %3d %3d",&a_measured_data.siteIDNumber,&a_measured_data.dayOfMonth,&a_measured_data.windSpeed,&a_measured_data.temperature);
data[n]=a_measured_data;
n++;
}
fclose(infilep);
cout << " site ID, Day of Month, Wind speed, Temp " << endl;
for( i=0; i; )
{
cout << " %4d %3d %3d %3d " << endl;
}
cout << " \n\n " << endl;
/* To get the different ID Values */
n=0;
diff[0]=data[0].siteIDNumber;
for ( i=0; i; )
{
if (diff[n]==data.siteIDNumber)
{
continue;
}
else
{
n++;
diff[n]=data.siteIDNumber;
}
}
/* To get the Maximum value of temperature for all individual ID */
n=0;
for( i=0; i; )
{
if (diff[n]==data.siteIDNumber)
{
if(max[n])
{
max[n]=data.temperature;
min[n]=data.temperature; //We are setting min value of temperature to maximum value so that it can further be decreased
}
n++;
}
}
/* To get the Minimum value of temperature for all individual ID */
for( i=0; i; )
{
for(n=0;n<3;n++)
{
if(diff[n]==data.siteIDNumber)
{
if(min[n]>data.temperature)
min[n]=data.temperature;
}
}
}
/* to Get the Average windfall for the given ID */
for( i=0; i; )
{
for(n=0;n<3;n++)
{
if(diff[n]==data.siteIDNumber)
{
avg[n]=avg[n]+data.wind_speed;
count[n]+=1;
continue;
}
}
}
/* Display Calculated data */
cout << " site ID, Max Temp, Min Temp, Variation, Mean Wind speed " << endl;
for(i=0;i<3;i++)
cout << " %d\t%d\t%d\t%d\t%d\n " << diff << max << min << maxmin << avg << endl;
/* To calculate the value of greatest variation in temperature*/
var=0;
for(n=0;n<3;n++)
{
if((max[n]min[n])>var)
var=max[n]min[n];
}
/* Print Greatest Variation in temperature*/
cout << " Temperature " << endl;
for(n=0;n<3;n++)
{
if((max[n]min[n])==var)
cout << " Greatest Variation is at Site Id " << diff[n] << endl;
}
/* To calculate the value of greatest variation for average wind speed*/
var=0;
for(n=0;n<3;n++)
{
if((avg[n]/count[n])>var)
var=avg[n]/count[n];
}
/* Print Greatest variation in average wind speed */
cout << " Average Wind Speed " << endl;
for(n=0;n<3;n++)
{
if((avg[n]/count[n])==var)
cout << " Greatest Variation is at Site ID " << diff[n] << endl;
}
}
 