Question

C++ coding, help

Answer 1

Answer:

The program in C++ is as follows:

#include <fstream>

#include <iostream>

#include <iomanip>

using namespace std;

int main() {

 string filename;

 cout<<"Filename: ";

 cin>>filename;

 ifstream inFile(filename);

 if(!inFile) {

   cout << endl << "Cannot open file " << filename;

   return 1;  }  

 ofstream fout;

 ifstream fin;

 fin.open("invalid-numbers.txt");  

 fout.open ("invalid-numbers.txt",ios::app);  

 double sum = 0; int valid = 0; int invalid = 0;

 double num = 0;

 while(!inFile.eof()) {

   inFile >> num;

   if(num >= 0 && num<=110){   sum+=num; valid++; }

else{ invalid++;

if(fin.is_open()){

   fout<<fixed<<setprecision(2)<<num<<"\n";    }  }  }

 fin.close();

 fout.close();

 inFile.close();

 cout<<"Total values: "<<valid+invalid<<endl;

 cout<<"Invalid values: "<<invalid<<endl;

 cout<<"Valid values: "<<valid<<endl;

 cout<<"Average of valid values: "<<fixed<<setprecision(2)<<sum/valid<<endl;    

 double inv;

 ifstream inFiles("invalid-numbers.txt");

 while(!inFiles.eof()) {

   inFiles >> inv;

   cout<<inv<<"\n";

}

inFiles.close();

 return 0;

}

Explanation:

See attachment for source file where comments are used to explain each line

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