Please write C++ functions, class and methods to answer the following questions. 1. Define a new C++ class named “Exam” that manages simple exam information: student id (integer) and a score (integer) The class must provide at least the following two methods: • isPassing which will return a boolean: true if the score is >=60 and false otherwise • toString method that returns the string containing all the information about the Exam including the status of pass or fail. It is considered to have “Passed” status when the score is >= 60 and “Failed” otherwise. For example, here is the output for different Exam objects: ID(1234) SCORE(100) STATUS(Passed) ID(1235) SCORE(50) STATUS(Failed) • isDuplicate method that compares the student id between the two Exam objects and return true if they both have the same student id number, and false otherwise. Note: you can add as many other methods as you need. Show how this class, objects and its methods are being used and tested. 2. Write a function named “report” that accepts an array of Exam objects and its array size. It will go through the given list of Exam objects and return the number of exams that have “Passed” status, the minimum and maximum scores as well as the pointer to the Exam object that has the maximum score (just one object if there are multiple objects with the same max score). In another words, this function will return 4 different values. You can assume that the given array has at least one Exam. - 2 - 3. Write a function named isThisStudentPassing that accepts an array of Exam object pointers, its size and the search student id. It will go through the given array of pointers to find all the exams belong to that search student id. It will return true if that student has all the exams with “Passed” status and false otherwise. In another words, the student must pass all exams to return true. If one of them failed, it will return false. In addition, this function returns the number of exams belonged to that student.

Please write C++ functions, class and methods to answer the following questions. 1. Define a new C++ class named “Exam” that manages simple exam information: student id (integer) and a score (integer) The class must provide at least the following two methods: • isPassing which will return a boolean: true if the score is >=60 and false otherwise • toString method that returns the string containing all the information about the Exam including the status of pass or fail. It is considered to have “Passed” status when the score is >= 60 and “Failed” otherwise. For example, here is the output for different Exam objects: ID(1234) SCORE(100) STATUS(Passed) ID(1235) SCORE(50) STATUS(Failed) • isDuplicate method that compares the student id between the two Exam objects and return true if they both have the same student id number, and false otherwise. Note: you can add as many other methods as you need. Show how this class, objects and its methods are being used and tested. 2. Write a function named “report” that accepts an array of Exam objects and its array size. It will go through the given list of Exam objects and return the number of exams that have “Passed” status, the minimum and maximum scores as well as the pointer to the Exam object that has the maximum score (just one object if there are multiple objects with the same max score). In another words, this function will return 4 different values. You can assume that the given array has at least one Exam. - 2 - 3. Write a function named isThisStudentPassing that accepts an array of Exam object pointers, its size and the search student id. It will go through the given array of pointers to find all the exams belong to that search student id. It will return true if that student has all the exams with “Passed” status and false otherwise. In another words, the student must pass all exams to return true. If one of them failed, it will return false. In addition, this function returns the number of exams belonged to that student.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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ll data members must be declared as private.
Global variables are not allowed. Constants are ok.
There should be no usage of cin or cout in the method or in the class definition or
required functions. They should be handled using parameters and return values.
cin and cout can and should be used in the testing functions.
There should be only one “return” statement in a function or method. Multiple return
statements within the same function/method are not allowed.

Please pay attention to the required data types in the description.
tuple, list and vector classes are not allowed to be used in this exam.

Please write C++ functions, class and methods to answer the following questions.

1. Define a new C++ class named “Exam” that manages simple exam information:
student id (integer) and a score (integer)

The class must provide at least the following two methods:
• isPassing which will return a boolean: true if the score is >=60 and false
otherwise
• toString method that returns the string containing all the information about
the Exam including the status of pass or fail. It is considered to have “Passed”
status when the score is >= 60 and “Failed” otherwise.
For example, here is the output for different Exam objects:
ID(1234) SCORE(100) STATUS(Passed)
ID(1235) SCORE(50) STATUS(Failed)
• isDuplicate method that compares the student id between the two Exam
objects and return true if they both have the same student id number, and false
otherwise.

Note: you can add as many other methods as you need.
Show how this class, objects and its methods are being used and tested.

2. Write a function named “report” that accepts an array of Exam objects and its
array size. It will go through the given list of Exam objects and return the number
of exams that have “Passed” status, the minimum and maximum scores as well as
the pointer to the Exam object that has the maximum score (just one object if
there are multiple objects with the same max score). In another words, this
function will return 4 different values.
You can assume that the given array has at least one Exam.

- 2 -
3. Write a function named isThisStudentPassing that accepts an array of Exam
object pointers, its size and the search student id. It will go through the given
array of pointers to find all the exams belong to that search student id. It will
return true if that student has all the exams with “Passed” status and false
otherwise. In another words, the student must pass all exams to return true. If one
of them failed, it will return false.
In addition, this function returns the number of exams belonged to that student.

4. Write a function named “createExamsForThisStudent” that accepts an array of
scores (integers), its size and a student id. It will create an array of Exam pointers
for that student, each element in the array will point to the Exam objects, one for
each score in the given array. This function will return the pointer to the first
element in newly created array.

5. Write a function named “endingWithSlashSlash” that accepts the same
parameters as command line arguments (argc and argv). It returns true if at least
one of the arguments have a “//” at the end and false otherwise.
This function also returns the number of arguments that have “//” at the end.

For example,
“//” will return true and 1
“one// two three// four” will return true and 2
“one” will return false and 0
“one two” will return false and 0

Please note that for question #5, you cannot refer or use string class, string
methods such length() or size() or any string function such as strlen(), strcmp
or strstr(). Please use only array notation, pointer to character, and/or pointer
arithmetic and make use of the fact that this is a C-string.

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