Question

Write a complete program that uses the functions listed below. Except for the printOdd function, main should print the results after each function call to a file. Be sure to declare all necessary variables to properly call each function. Pay attention to the order of your function calls. Be sure to read in data from the input file. Using the input file provided, run your program to generate an output file. Upload the output file your program generates.

•Write a function called sumOfSquares which takes as its parameter an input file. The function should return the total sum of all the squared numbers in the file up to 0.

•Write function called countMult5, that takes as its parameter an input file. The function should read two integers, start and end, to counts how many numbers between start and end are multiples of 5. Return the answer to the calling function.

•Write a function called printOdd that takes as its parameters an input file stream and output file stream. The function should print only the odd numbers in a file up to -999.

•Write a function called productEven, that takes as its parameter an input file. The function should read two integers and calculate the total product of only even numbers between them. Return the answer to the calling function.

•Define a function called calcAverage, that takes as its parameter an input file. The function should read the numbers from a file up to the sentinel value and calculates their average. Return the answer to the calling function.

C++ program

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
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#include <fstream>
#include <iostream>
#include <iomanip>
#include <cstring>
#include <cstdlib>

using namespace std;

int sumOfSquares(string filename);
int countMult5(string filename);
void printOdd(string filename,string outputfile);
int productEven(string filename);
double calcAverage(string filename);
int main() {
   //Declaring variables
   string filename,outputfile;
   int res;
  

cout<<"Enter the input file name :";
cin>>filename;

res=sumOfSquares(filename);
cout<<"Sum of Squares :"<<res<<endl;
  
cout<<"Enter the input file name :";
cin>>filename;
res=countMult5(filename);
cout<<"No of Multiples of 5 :"<<res<<endl;

cout<<"Enter the input file name :";
cin>>filename;
   cout<<"Enter the output file name :";
cin>>outputfile;
printOdd(filename,outputfile);
  
cout<<"Enter the input file name :";
cin>>filename;
res=productEven(filename);
cout<<"Product of Even numbers :"<<res<<endl;
cout<<"Enter the input file name :";
cin>>filename;
double avg=calcAverage(filename);
cout<<"Average of Numbers :"<,avg<<endl;
   return 0;
}

int sumOfSquares(string filename)
{
   ifstream dataIn;
   int num,sumSquares=0;
  
   dataIn.open(filename.c_str());
//checking whether the file name is valid or not
if(dataIn.fail())
{
   cout<<"** File Not Found **"<<endl;
   exit(0);
}
else
{
//Reading the data from the file
while(dataIn>>num)   
{
   if(num==0)
   break;
   else
   sumSquares+=num*num;
   }
dataIn.close();
return sumSquares;
}    
  
}

int countMult5(string filename)
{
       ifstream dataIn;
   int num1,num2,cnt=0;
  
   dataIn.open(filename.c_str());
//checking whether the file name is valid or not
if(dataIn.fail())
{
   cout<<"** File Not Found **"<<endl;
   exit(0);
}
else
{
//Reading the data from the file
dataIn>>num1>>num2;
for(int i=num1;i<=num2;i++)
{
   if(i%5==0)
   {
       cnt++;
       }
   }

dataIn.close();
return cnt;
}    
  
}
void printOdd(string filename,string outputfile)
{
           ifstream dataIn;
           ofstream dataOut;
   int num;
  
   dataIn.open(filename.c_str());
//checking whether the file name is valid or not
if(dataIn.fail())
{
   cout<<"** File Not Found **"<<endl;
   exit(0);
}
else
{
   dataOut.open(outputfile.c_str());
   while(dataIn>>num)
   {
      if(num!=-999)
      {
          if(num%2!=0)
          {
              dataOut<<num<<endl;
           }
       }
   }
   dataIn.close();
   dataOut.close();
}
}

int productEven(string filename)
{
        ifstream dataIn;

   int num1,num2,prod=1;
  
   dataIn.open(filename.c_str());
//checking whether the file name is valid or not
if(dataIn.fail())
{
   cout<<"** File Not Found **"<<endl;
   exit(0);
}
else
{

   dataIn>>num1>>num2;
     
      for(int i=num1;i<=num2;i++)
      {
          if(i%2==0)
          {
              prod*=i;
           }
       }
     
   dataIn.close();
   return prod;
}  
}
double calcAverage(string filename)
{
          ifstream dataIn;

   int num,sum=0,cnt=0;
  
   dataIn.open(filename.c_str());
//checking whether the file name is valid or not
if(dataIn.fail())
{
   cout<<"** File Not Found **"<<endl;
   exit(0);
}
else
{
while(dataIn>>num)
{
    if(num!=-999)
    {
        sum+=num;
        cnt++;
       }
       else
       break;
   }
  
   dataIn.close();
   return ((double)sum/cnt);
}  
}

========================================Thank You