Question

You are to write a program that grades students (Maybe I will use it on you). Your program must open and read in "input.txt" (an example of which is below). It will contain the students name and their test scores. You are to calculate the students final grade in the course. Take the average of their test scores and output their average to a file with the below format. For the output.txt ensure that the formatting is in the block style shown below. Test scores should always be shown to the second decimal place. input txt: (Meryl Streep 100 105 98.5 99.5 106)

output txt : (Meryl StreepTest scores:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Average score: .......................101.80Test score 1: ........................100.00Test score 2: ........................105.00Test score 3: .........................98.50Test score 4: .........................99.50Test score 5: ........................106.00~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~) Input fields: <First Name> <Last Name> <Score on Test 1> <Score on Test 2> <Score on Test 3> <Score on Test 4> <Score on Test 5>

c++

Answer 1

Please use below code. In case of any query, do comment:

#include <iostream>

#include<iomanip> //used for setw and setprecesion

#include <fstream> //used for file handling

using namespace std;

int main()

{

    //file stream handle for input file

    ifstream inputFile;

    //file stram handle for output file

    ofstream outputFile;

    //variable to read first name and last name

    string firstname, lastname;

    //for reading scores

    float score1, score2, score3,score4,score5;

    //average score to calculate

    float averageScore =0.0;

   

    //open the input and output files

    inputFile.open("input.txt");

    outputFile.open("output.txt");

   

    //read the input file line by line till end of file

    while(!inputFile.eof())

    {

        //read the variable from inout file

        inputFile >> firstname >> lastname >> score1 >> score2 >> score3 >> score4 >> score5;

       

        //calculate the average Score

        averageScore = (score1 + score2 + score3 + score4 + score5)/5;

       

        //output the expected formatted output to the output file

        outputFile << "(" <<firstname << " " << lastname << " Test Scores: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Average Score:";

        //std::Fixed to set the fixed width of the output and setprecison(2) is used to display two decimal places in the scores

        outputFile <<"......................." << std::fixed << std::setprecision(2) << averageScore;

        outputFile <<" Test score 1: ........................" << std::fixed <<std::setprecision(2) << score1;

        outputFile <<" Test score 2: ........................" << std::fixed <<std::setprecision(2) << score2;

        outputFile <<" Test score 3: ........................" << std::fixed <<std::setprecision(2) << score3;

        outputFile <<" Test score 4: ........................" << std::fixed <<std::setprecision(2) << score4;

        outputFile <<" Test score 5: ........................" << std::fixed <<std::setprecision(2) << score5;

        outputFile <<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~)" <<endl;

    }

   

    //close both the files

    outputFile.close();

    inputFile.close();

    return 0;

}

================================================================================

Screen shot of the code for your reference:

Input:

Content of the input file is :

Meryl Steep 100 105 98.5 99.5 106

Bob Jones 99 106 108 101.5 102

Steve White 100 102 105 109 97.5

Output:

Content of the out put file is as below:

(Meryl Steep Test Scores: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Average Score:.......................101.80 Test score 1: ........................100.00 Test score 2: ........................105.00 Test score 3: ........................98.50 Test score 4: ........................99.50 Test score 5: ........................106.00~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~)

(Bob Jones Test Scores: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Average Score:.......................103.30 Test score 1: ........................99.00 Test score 2: ........................106.00 Test score 3: ........................108.00 Test score 4: ........................101.50 Test score 5: ........................102.00~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~)

(Steve White Test Scores: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Average Score:.......................102.70 Test score 1: ........................100.00 Test score 2: ........................102.00 Test score 3: ........................105.00 Test score 4: ........................109.00 Test score 5: ........................97.50~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~)

Please rate answer. Thanks