Question

Write a program that calculates the student's final grade for a test with 20 multiple questions using C# .net Framework.

se an array of integers to store the test scores (0-incorrect answer, 1-correct answer). Initialize it as follows:

int [] scores = {1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1};

3. If the student answered the question right, add 5 points to the running total. If the student didn’t answer correctly subtract .5 points from the running total.

4. The running total is initialized with 5 points (so the student receives 5 points extra credit).

5. To define the final grade use the grading scale below

Score	Grade
90+	A
80-89	B
70-79	C
60-69	D
<60	F

6. Write a helper method displayScoreGrade()that displays the score and calculated grade.

     private static void displayGrade(double score, char grade){

        //printing the score;

        //printing the grade;

        ...         

     }

  Call the method from the main method.

Answer 1

Code -

using System;
class HelloWorld {
//function to display Grade
private static void displayGrade(double score, char grade){
//calculate grade according to score
if(score>=90 && score <=100){
grade = 'A';
}
else if(score>=80 && score <=89){
grade = 'B';
}
else if(score>=70 && score <=79){
grade = 'C';
}
else if(score>=60 && score <=69){
grade = 'D';
}
else {
grade = 'F';
}
//print the grade in Console
Console.WriteLine("Total marks is "+score+" grade is "+grade );
}
static void Main() {
//SCORE ARRAY
int [] scores = {1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1};
int i;
//define sum by 5
double sum=5;
char grade='A';
//read the score from array and add marks to sum for correct answer
for(i=0;i<scores.Length;i++){
//correct answer check
if(scores[i] == 1){
sum+=5;
}
//incorrect answer check
else{
sum-=0.5;
}
}
//call function to dislay grade
displayGrade(sum,grade);

}
}

Screenshots -