Question

Instructions:

Write a program to calculate students’ average test scores and their grades.

You may assume the following input data:

Johnson 85 83 77 91 76

Aniston 80 90 95 93 48

Cooper 78 81 11 90 73

Gupta 92 83 30 69 87

Blair 23 45 96 38 59

Clark 60 85 45 39 67

Kennedy 77 31 52 74 83

Bronson 93 94 89 77 97

Sunny 79 85 28 93 82

Smith 85 72 49 75 63

Use three arrays: a one-dimensional array to store the students’ names, a (parallel) two-dimensional array to store the test scores, and a parallel one-dimensional array to store grades. Your program must contain at least the following functions: a function to read and store data into two arrays a function to calculate the average test score and grade a function to output the results. Have your program also output the class average. Use the following scale to determine the letter grade: 90%–100%, A; 80%–89.99%, B; 70%–79.99%, C; 60%–69.99%, D; and 0%–59.99%, F .

programing language: C++

Answer 1

C++ PROGRAM ====>

#include <iostream>
#include <fstream>
#include <iomanip>

using namespace std;

// function to display data on console
void display(string names[],double scores[][5],string grades[])
{

for(int i=0;i<10;i++)
{
cout<<left<<setw(20)<<names[i];
for(int j=0;j<5;j++)
{
cout<<left<<setw(10)<<fixed<<setprecision(2)<<scores[i][j];
}
cout<<left<<setw(10)<<grades[i]<<endl;
}

}

// function to calculate grade and store in array
int gradeStore(double scores[][5],string grades[])
{

double avg;

for(int i=0;i<10;i++)
{

  double total =0;
for(int j=0;j<5;j++)
{
total = total+ scores[i][j];
}
avg = total/5; // calculate average

if(avg>=90)
{
grades[i]="A";
}
else if(avg>=80)
{
grades[i]="B";
}
else if(avg>=70)
{
grades[i]="C";
}
else if(avg>=60)
{
grades[i]="D";
}
else
{
grades[i]="F";
}

}
return 0;
}

// read data from txt file and store in array
int studentData(string name[],double score[][5])
{
ifstream inFile;
   inFile.open("student.txt");

string names;
   double score1, score2,score3,score4,score5;
   int i=0;

   while (inFile >>names >>score1>>score2>>score3>>score4>>score5)
   {
       name[i]=names;
score[i][0] = score1;
score[i][1] = score2;
score[i][2] = score3;
score[i][3] = score4;
score[i][4] = score5;
i++;
   }

   return 0;
}
int main()
{
// array size 10 for 10 student
string name[10];
double score[10][5];
string grade[10];

studentData( name,score);

gradeStore(score ,grade);

display(name,score,grade);

return 0;
}

OUTPUT SCREENSHOT ====>