Question

1)-Write a method to accept n integer number between 0 and 100 and return the average. 2)-Write a method to convert an the letter grade as follow. integer number between 0 and 100 to latter grade A to F and return. 100-90->A 89-80->B 79-70->C 69-60->D 00-59->F 3)-Write a method to compute GPA for following letter grade and return the GPA value. A =>4.0 B ->3.0 C->20 D->1.0 Hint for option 1

HINT

Answer 1

import java.util.*;

class Project
{
void calAvg(int n)
{
Scanner input=new Scanner(System.in);
int sum=0,score;
double avg;
for(int i=1;i<=n;i++)
{
while(true)
{
System.out.print("Enter score for test "+(i)+" : ");
score=input.nextInt();
if(score>0 && score<=100)
{
sum=sum+score;
break;
}
else
{
System.out.println("Score should be between 0 and 100\n");
}
}
}
avg=(double)sum/n;
System.out.println("\nAverage : "+avg);

getLetterGrade(avg);
}

void getLetterGrade(double avg)
{
char letter=' ';
if(avg>=90 && avg<=100)
{
letter='A';
}
else if(avg>=80 && avg<=89)
{
letter='B';
}
if(avg>=70 && avg<=79)
{
letter='C';
}
else if(avg>=60 && avg<=69)
{
letter='D';
}
else if(avg>=00 && avg<=59)
{
letter='F';
}
System.out.println("\nLetter Grade : "+letter);

getGPAvalue(letter);
}

void getGPAvalue(char letter)
{
double value=0.0;
if(letter=='A')
{
value=4.0;
}
else if(letter=='B')
{
value=3.0;
}
else if(letter=='C')
{
value=2.0;
}
else if(letter=='D')
{
value=1.0;
}
System.out.println("\nGPA value : "+value);
}

public static void main(String args[])
{
Scanner input=new Scanner(System.in);
Project p1=new Project();
System.out.print("\n\nEnter n integer number : ");
int n=input.nextInt();
if(n>0 && n<=100)
{
p1.calAvg(n);
}
else
{
System.out.println("Number should be between 0 and 100\n");
}
System.out.println();
}
}

Windews PowerShell PS C:\Users\user\Desktop javac Project. java PS C: \Users\user\Desktop> java Project Enter n integer number :5 Enter score for test 1: 98 Enter score for test 3: 98 Enter score for test 4: 96 Enter score for test 5 94 Average 96. 2 Letter Grade: A GPA value 4.0 PS C:\Users\user\De sktop> . ACv ate Windows O Ivpe bere to search A A