Question
in c++ using analysis.cpp not main.cpp
6.22 P06-02 Rainfall Analysis with Functions of rainfall data from Chicago Midway airport, outputting the year and average rainfall for that year Write a complete ++ program that inputs rainfall data collected at Chicago Midway airport, and outputs the average rainfall for amount of rainfall for the 12 months of January, February, March,., December. The last ne of the input data is as follows. There are N-0 lines, each containing 13 values a year followed by 12 real numbers denoting put consists of a single value-1 Here's one possible input sequence 2011 0.71 3.46 2.32 5.73 5.32 7.41 5.44 3.94 3.89 2.24 3.65 2 2013 3.18 2.57 2.22 7.95 6.47 3.12 2.19 2.52 1.93 5.69 2.94 1.54 2012 2.16 1.39 2.17 2.63 4.32 1.07 3.78 6.06 1.61 3.21 1.04 2.09 -1 For this input your program shouid produce the following output, which is the average rainfall for each year 2011: 3.885 2012: 2.6275 2013: 3.52667 Like the previous exercise, the provided code is actually spread across 2 C++ source files: 'main.cpp and analysis.cpp. Start by reviewing the code for 'main.cpp'which is visible in the editor pane -note that this code is read-only (you cannot modify it) In particular, focus on the code within the while loop. Once the year is input, youll see that the InputYearofDataAndReturnAverage0 function is called to input the remaining 12 values on that line, then compute and return the average. The average is stored, output, and then the next year is input and the process repeated-until-1 is input. Now let's review the code for the user-defined function. Above the editor pane you'll see the text·Current file main.cpp., with a little drop- down arrow to the right. Click the drop-down and select analysis.cpp Then, immediately click the link "Load default template...-this avoids a bug that appears in some web browsers (which fail to properly load the file). You only need to do this once, the first time you view the file
Explanation / Answer
#include<iostream>
#include<fstream>
#include<iomanip>
using namespace std;
int main(){
ifstream fin;
string a;
double sum;
double b;
fin.open("input50.txt");
if (!fin){
cout << "Error in opening file ";
return 0;
}
while (1){
fin >> a;
if (a == "-1")
break;
sum = 0;
for (int i =0; i<12; i++){
fin >> b ;
sum = sum + b;
}
cout << a << " : " << sum/12 << endl;
}
return 0;
}
