//Chapter 7: Programming Exercise 14 Pseudo Code and Logic import java.io.and ja

Question

//Chapter 7: Programming Exercise 14 Pseudo Code and Logic

import java.io.and java.util packages
Create public class Ch7_PrExercise14
Setup public static void main(String[] args) with throws FileNotFoundException
//variable declarations
integer counter
DoubleClass courseAvg = new DoubleClass()
double classAvg
String name
char grade

<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Setup inFile as new Scanner as new FileReader with file name Ch7_Ex14Data.txt
Setup outFile = new PrintWriter with file name of Ch7_Ex14out.txt

output headings "Student   Test1 Test2 Test3 Test4 Test5 Average Grade" to outfile

Get input in a While loop(inFile.hasNext)
    Get name from inFile.next();
    Output name to outFile.printf("%-10s", name);
    Call CalculateAverage passing (inFile, outFile, courseAvg)
    Output outFile.printf("%6.2f ", courseAvg.getNum());
    Calculate classAvg = classAvg + courseAvg.getNum()
    Calculate grade = call calculateGrade(courseAvg.getNum());
    Output grade outFile.printf("%3s%n", grade);
End Loop

Calculate classAvg = classAvg / 10
Output Class Average to outFile
Close outFile
  

***Routine calculateAverage(Scanner inF, PrintWriter outF, DoubleClass CAvg)
   {
    Declare integers for score, sum and count

     Setup Loop for 5 times for the five grades (for)
           get score = inF.nextInt()
           output score to outfile
           add score to sum total
      end loop

      calculate the score average ( sum / 5.0)
  
***End Routine calculateAverage

***Routine calculateGrade(double avg)
   if average >= 90
           return grade of 'A'
       else if average >= 80
                return grade of 'B'
       else if (average >= 70
                return grade of 'C'
       else if (average >= 60)
                return grade of 'D'
       else
           return grade of 'F'
***End Routine calculateGrade

Explanation / Answer

import java.io.*;

import java.util.*;

public class Ch7_PrExercise14

{

public static void main(String[] args) throws FileNotFoundException

{

//variable declarations

int counter=0;

double courseAvg = 0;

double classAvg=0;

String name="";

char grade='';

Scanner inFile = new Scanner(new FileReader("Ch7_Ex14Data.txt"));

PrintWriter outFile = new PrintWriter("Ch7_Ex14out.txt");

outfile.println("Student Test1 Test2 Test3 Test4 Test5 Average Grade");

while(inFile.hasNext)

{

name = inFile.next();

outFile.printf("%-10s", name);

courseAvg = calculateAverage(inFile, outFile, courseAvg);

outFile.printf("%6.2f ", courseAvg);

classAvg = classAvg + courseAvg;

grade = calculateGrade(courseAvg);

outFile.printf("%3s%n", grade);

}

classAvg = classAvg / 10;

outFile.printf("Class average is %6.2f %n", classAvg);

outFile.close();

}

double calculateAverage(Scanner inF, PrintWriter outF, double CAvg)

{

int score=0, sum=0,count=0;

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

{

score = inF.nextInt()

outFile.printf("%d ", score);

sum=sum+score;

}

return ( sum / 5.0);

}

char calculateGrade(double avg)

{

if (average >= 90)

return 'A';

else if (average >= 80)

return 'B';

else if (average >= 70)

return 'C';

else if (average >= 60)

return 'D';

else

return 'F';

}

}

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