Question

on C++ language please and if you can also put note on it to better undertand it. Write a program that reads data from a data file, the value of which is provided at the end of the problem. Your program is to incorporate the following requirements:

• Data to the program is input from a file of an unspecified length; that is, the program does not know in advance how many numbers are in the file.
• Save the output of the program in a file.
• Write a function called getNumber which reads a number from the input file, outputs the number to the output file and the monitor and sends the input number to the function main. Make sure, both input and out file are being opened in the main program.
• Write a function called classifyNumber which counts number of even, odd, and zero (occurrences of zero) available in the input file.
• Have the program find the sum and average of the numbers and print only 10 numbers per line.
• Write a function called printResult so that it outputs (in output file and monitor) even number of counts, odd number of counts, number of zeros, sum of the numbers and average of the numbers. Make sure output file is being opened in the function main.

Create an input file using the following data:

43 67 82 0 35 28 -64 7 -87 0 0 0 0 12 23 45 7 -2 -8 -3 -9 4 0

1 0 -7 23 -24 0 0 12 62 100 101 -203 -340 500 0 23 0 54 0 76

Answer 1

ANSWER:

I have provided the properly commented and indented code so you can easily copy the code as well as check for correct indentation.
I have provided the input/output image of the code so you can easily cross-check for the correct output of the code.
Have a nice and healthy day!!

CODE

// including all header files
#include <bits/stdc++.h>

using namespace std;

// function getNumber to return inputed number from input file
// takes to argument input and outfile by reference
int getNumber(ifstream& inputfile, ofstream& outputfile){
        // defining variable num
        int num;
        // reading number from inputfile in variable num
        inputfile>>num;
        // outputing num to outputfile
        outputfile<<num<<" ";
        // outputing number to monitor
        cout<<num<<" ";

        // returning num to main
        return num;

}


// function classifynumber that take input as number vector
// and take defnined variables even, odd, zeros, sum  by reference
// and print 10 numbers in each line and returns average
float classifyNumber(vector<int> numbers,int& even,int& odd,int& zeros,int& sum){
        // looping through each number and increment count of all
        for(int i=0;i<numbers.size();i++){
                // if 10 th number printing newline
                if(i%10==0){
                        cout<<endl;
                }
                // displaying number
                cout<<numbers[i]<<" ";
                // incrementing sum
                sum = sum+numbers[i];
                // checking for 0
                if(numbers[i]==0){
                        // increment zeros
                        zeros = zeros + 1;
                }
                // condition for even
                else if(numbers[i]%2==0){
                        even = even + 1;
                }
                // else odd
                else{
                        odd = odd+1;
                }
        }
        // calculating average
        float average = (float)sum/numbers.size();
}

// function printResult
// takes input => output file, even, odd, zeros, sum and average
// display all results
void printResult(ofstream& outputfile,int& even, int& odd,int&  zeros,int&  sum ,float& average){
        // outputing even to output file and monitor
        cout<<endl<<"even numbers are: "<<even;
        outputfile<<endl<<"even numbers are: "<<even;
        // outputing odd to output file and monitor
        cout<<endl<<"odd numbers are: "<<odd;
        outputfile<<endl<<"odd numbers are: "<<odd;
        // outputing zeros to output file and monitor
        cout<<endl<<"zeros numbers are: "<<zeros;
        outputfile<<endl<<"zeros numbers are: "<<zeros;
        // outputing sum to output file and monitor
        cout<<endl<<"sum of numbers is: "<<sum;
        outputfile<<endl<<"sum of numbers is: "<<sum;
        // outputing average to output file and monitor
        cout<<endl<<"Average of numbers is: "<<average;
        outputfile<<endl<<"Average of numbers is: "<<average;

}

// main function
int main(){
        // defining input output file variables
        // file variable to read
        ifstream inputfile;
        // file variable to write
        ofstream outputfile;
        // opening file to read write using open method of file
        inputfile.open("input.txt");
        outputfile.open("output.txt");

        // defining vector to store all inputed numbers
        vector<int> numbers;

        // calling function getNumber till inputfile not reaches end of file
        // looping till end of file
        int num;
        while(!inputfile.eof( )){
                // calling getNumber by passing inputfile and output file as argument
                num = getNumber(inputfile,outputfile);
                // pushing number to vector
                numbers.push_back(num);
        }

        // function classifynumber that take input as number vector
        // and take defnined variables even, odd, zeros, sum by reference
        // and print 10 numbers in each line and  returns average
        int even=0,odd=0, zeros=0,sum = 0;
        float average = classifyNumber(numbers,even, odd,zeros,sum);

        // function printResult
        // takes input => output file, even, odd, zeros, sum and average
        // display all results
        printResult(outputfile,even, odd, zeros, sum , average);

        // closing files
        inputfile.close();
        outputfile.close();

        return 0;

}

INPUT IMAGE (input.txt)

OUTPUT IMAGE

Console Output

output.txt