Using 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 called GetData to read and store data into two arrays, a function called Average that is used to calculate the average test score and grade, and a function called PrintResults to output the results. The student names should be to the left with a width of 10 columns. The test scores should be to the right with a width of 5 columns. Have your program also output the class average on a line after the output.

3 serperate arrays should be used

and it should read from a file

ive used some void functions two dimensional arrays to read numbers from a text file but im getting a lot of errors i know setw needs to be used also

Question

Dominique Kelly

Engineering

28 July, 13:52

Using 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 called GetData to read and store data into two arrays, a function called Average that is used to calculate the average test score and grade, and a function called PrintResults to output the results. The student names should be to the left with a width of 10 columns. The test scores should be to the right with a width of 5 columns. Have your program also output the class average on a line after the output.

3 serperate arrays should be used

and it should read from a file

ive used some void functions two dimensional arrays to read numbers from a text file but im getting a lot of errors i know setw needs to be used also

+5

Answers (1)

Know the Answer?

Jett Frederick · Answer 1

This C+ + program considers scores as follows

A>=90

B>=80

C>=70

D>=60

F<60

You must have a text file for input data

Here is the program as per the question

#include

#include

#include

#include

using namespace std;

//Definition

class student

{

private:

string names[80];

int testscores[80][50];

char grades[80];

int count;

public:

void GetData ();

void Average ();

void PrintResult ();

};

void student::GetData ()

{

ifstream in;

in. open ("student1. txt", ios::in);

if (in. fail ()) / /test if the file exist

{

cout<<"Unable to open the file";

exit (0);

}

count=0;

while (! in. eof ())

{

in>>names[count]; / /read name

for (int i=0; i<5; i++) / / assume 5there are 5 test scores

{

in>>testscores[count][i]; / /read scores.

}

count++;

}

count--;

}

void student::Average ()

{

float sum, avg;

for (int i=0; i
{

sum=0.00;

for (int j=0; j<5; j++)

{

sum=sum+testscores[i][j];

}

avg=sum/5;

if (avg>=90.00)

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';

}

}

void student::PrintResult ()

{

for (int i=0; i
{

cout. setf (ios::left, ios::adjustfield);

cout. width (10);

cout<
cout. setf (ios::right, ios::adjustfield);

for (int j=0; j<5; j++)

{

cout. width (5);

cout<
}

cout. width (5);

cout<
}

}

int main ()

{

student obj;

obj. GetData ();

obj. Average ();

obj. PrintResult ();

return 0;

}