Question

Your next programming assignment at the Research Center is to write a program that reads data from a file and produces a report of rainfall for that period of time. The program should read the starting month name from the data file, then read an ending month name, followed by reading in monthly rainfall amounts for each of the months from the starting month through the ending month. As it reads the monthly totals, it should sum (accumulate) the rainfall amounts and then eport the total rainfall and average rainfall for the period. For example, if the starting month name is January and the ending month is March, and the rainfall amounts are 2.55, 3.45 and 4.0, then th eoutput might look like this: During the months of January-March, the total rainfall was 10.00 inches and the average monthly rainfall was 3.33 inches. Data for the program is located in the file attached below (rainfall.txt). You may modify this data file to include more months, but make sure that you have a rainfall amount for each month (if you use January and December for the month names, you MUST have 12 rainfall amounts in your data file. Hint: After reading in the two month names, you will need to read in rain amounts until the EOF is reached and, as you read in each amount, add 1 to the count of how many pieces of rain data you read in. This will help with the average calculation. DO NOT assume there will always be 5 values in the file.

rainfall.txt

ouput:

April
August
1.16 2.02 1.34 1.51 .30

C++ programming language

Answer 1

Code

#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>
using namespace std;

int main()
{
   ifstream in;
   string startMonth, endMonth;
   double sum=0, avg, rainFall;
   int count=0;

   in.open("rainfall.txt");

   if (!in)
   {
       cout << "ERROR: Can't opent the file. Exiting....." << endl;
       return 0;
   }
   cout << fixed << setprecision(2);
   in >> startMonth;
   in >> endMonth;
   while (!in.eof())
   {
       in >> rainFall;
       sum += rainFall;
       count++;
   }
   avg = sum / count;
   cout << "During the months of " << startMonth << "-" << endMonth << " the total rainfall was " << sum << " inches and the average monthly rainfall was " << avg << " inches" << endl;;
   system("pause");
   return 1;
}

outputs

rainfall.txt

output

rainfall.txt

output

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