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posledela
3 years ago
10

To calculate the chapter from which you must solve the programming exercise, divide the integer number representing your student

ID by 3, consider the remainder (either 0, 1 or 2) and increment it by 3. The result you obtain represents the chapter number, and it should be 3, 4 or 5.
Computers and Technology
1 answer:
Mashutka [201]3 years ago
7 0

Answer:

<em>import java.util.Scanner;</em>

<em>public class ANot {</em>

<em>    public static void main(String[] args) {</em>

<em>        System.out.println("Please Enter Your Student ID");</em>

<em>        Scanner in = new Scanner(System.in);</em>

<em>        int yourId = in.nextInt();</em>

<em>       int chapterToRead = (yourId%3)+3;</em>

<em>        System.out.println("You are to read chapter: "+chapterToRead);</em>

<em>    }</em>

<em>}</em>

Explanation:

This solution is implemented in Java programming language. The scanner class is used to receive user input which is saved in an int variable yourId. In order to obtain the remainder when the students' ID is divided by 3, we use the modulo (%) operator which returns the remainder

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A teacher has five students who have taken four tests. The teacher uses the following grading scale to assign a letter grade to
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Answer:

#include <iostream>

using namespace std;

int main()

{

const int numofStudents = 5;//number of students

const int numofTests = 2;//number of tests taken by students

const int grade = 5;//number of grades available

char letter[grade] = { 'A','B','C','D','F' };

double table[numofStudents][numofTests];//defining 2darray with names and scores

string names[numofStudents];//storing names of students

for (int num = 0; num < numofStudents; num++)//storing names and scores of students

{

 cout << "Enter student's name: ";

 cin >> names[num];

 for (int test = 0; test < numofTests; test++)//scores loop

 {

  cout << "Enter the test score: ";

  cin >> table[num][test];

  if (table[num][test] < 0 || table[num][test]>100)//input validation

  {

   cout << "Invalid input. Try again" << endl;

   cin >> table[num][test];//input again

  }

 }

}

for (int i = 0;i < numofStudents;i++)//calculating averages and grades

{

 int sum = 0;

 cout << "Test scores for " << names[i] << ": " << endl;

 for (int j = 0;j < numofTests;j++)

 {

  cout << table[i][j] << " ";

  sum += table[i][j];//summing scores

 }

 cout << endl;

 float average = (float)sum / numofTests;//calculating the average

 cout << "Making an average of: "<< average;

 if (average <= 100 && average >= 90)//assigning a grade

 {

  cout << " and has received an " << letter[0];

 }

 else if (average <= 89 && average >= 80)

 {

  cout << " and has received a " << letter[1];

 }

 else if (average <= 79 && average >= 70)

 {

  cout << " and has received a " << letter[2];

 }

 else if (average <= 69 && average >= 60)

 {

  cout << " and has received a " << letter[3];

 }

 else if (average <= 59 && average >= 0)

 {

  cout << " and has received an " << letter[4];

 }

 else

 {

  cout << "Invalid scores entered." << endl;

 }

 cout << endl;

}

 return 0;

}

Explanation:

We first define the number of students, number of tests and number of grades available for assignments. We then fill in the 2D array of students names and their scores making sure assigning more than 100 and less than 0 is not allowed. We then sum the scores and retrieve an average. Using the average, a letter grade is assigned to that individual.

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