Develop a program which reads data from an in sequential access file (scores dat

Question

Develop a program which reads data from an in sequential access file (scores dat), manipulates the put data and writes the output data into another sequent access file (scores.out). The input file scores.dat is provided to you beforehand. It contains the students' id numbers, scores of test-1 test-2 and test-3 in each row. You will read data from scores.dat file and calculate each student's lowest score, highest score and average score. Then you will write students id number, student's lowest score, highest score and average score to the output file scores.out scores.out file has to have an appropriate header for each column. Assume that you do not know how many records are there in the input file. Followings are the sample snapshots of input file and, the output file after you run your program:

Explanation / Answer

scores.txt (Save the file under D Drive .Then the path of the file pointing to it is D:\scores.txt )

1111   56   88   82
2222   95   93   95
3333   67   91   66
4444   89   69   69
5555   78   80   90
6666   99   96   100
7777   79   86   84
8888   100   98   99
9999   45   85   75

___________________

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

int main() {
//defines an input stream for the data file  
ifstream dataIn;
  
//Defines an output stream for the data file
ofstream dataOut;
  
//Declaring variables
int id,test1,test2,test3,min,max;
double average=0.0,sum;
int scores[3];

//Opening the input file
dataIn.open("D:\scores.dat");
  
//creating and Opening the output file
dataOut.open("D:\scores.out");
  
//Setting the precision of two decimal places
dataOut<<setprecision(2)<<fixed<<showpoint;
  
dataOut<<"ID Lowest Highest Average ";
dataOut<<"== ====== ======= ======= ";

/* This while loop will read the data from
* the file and find minimum,maximum,average
* and written the output into another file
*/
while(dataIn>>id>>test1>>test2>>test3)
{
  
sum=0.0;
scores[0]=test1;
scores[1]=test2;
scores[2]=test3;

min=scores[0];
max=scores[0];

/* This for loop will find the
* minimum and maximum test scores
*/
   for(int i=0;i<3;i++)
   {
   if(min>scores[i])
       min=scores[i];
      
       if(max<scores[i])
       max=scores[i];
  
   //calculating the sum of test scores of each student  
       sum+=scores[i];  
   }   
     
   //calculating the average
average=sum/3;

//Writing the data to the output file
dataOut<<id<<" "<<min<<" "<<max<<" "<<average<<" ";  

}
cout<<"** Written data to the File **"<<endl;
  
//Closing the intput file
dataIn.close();
  
//Closing the output file.
dataOut.close();
  
return 0;
}

_______________________

scores.out (We will find this file under D Drive.As we specified the output file path as D:\scores.out )

ID   Lowest   Highest   Average

==   ======   =======   =======

1111   56   88   75.33

2222   93   95   94.33

3333   66   91   74.67

4444   69   89   75.67

5555   78   90   82.67

6666   96   100   98.33

7777   79   86   83.00

8888   98   100   99.00

9999   45   85   68.33

____________Thank You

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