Accelerated C + +: Programming practice with examples-practice Answers (9th)

my github Address: Https://github.com/CNhoward/Accerlerated-C-plus-plus

9-0. Compile, execute, and test the programs in this chapter.

Ans: See GitHub.

9-1 Reimplement Student_info The class so it calculates the final when grade reading the student's record, and stores that G Rade in the object. Reimplement the function to use this grade precomputed value.

Ans: See GitHub.

9-2. If we define the name function as a plain, non const member function, what other functions in our system must change And why?

Ans: We just need to modify the parameter type of the function compare (): Change the original bool Compare (const student_info& x,const student_info& y) to

BOOL Compare (Student_info X,student_info y)

The Tips:const object cannot call the const member function function;

Why did you change student_info& to Student_info x?

Because the sort (students.begin (), students.end (), compare), is passed to compare in the function as a const object, because a const object cannot be initialized with a non-const reference, Therefore, it needs to be changed to the value of transmission.

9-3. Our grade function is written to the throw an exception if a user tried to calculate a grade for a Student_info object whose Val UEs had not yet been read. Users who care is expected to catch this exception. Write A program this triggers the exception but does not catch it. Write a program, that catches the exception.

Ans: See GitHub.

9-4. Rewrite your program from the previous exercise valid the function, thereby avoiding the exception altogether.

Ans: See GitHub.

9-5. Write a class and associated functions to generate grades for students who take the course for Pass/fail credits. Assume that is only the midterm and final grades matter, and which a student passes with an average exam score greater than 60 . The report should lists the students in alphabetical order, and indicate P or F as the grade.

Ans: See GitHub.

9-6 Rewrite The Grading program for the Pass/fail students so and the report shows all the students who passed, followed By all the students who failed.

Ans: See GitHub.

9-7. The read_hw FUNCTION§4.1.3/57 solves a general problem (reading a sequence of values to a vector ) even though its name suggests that it should is part of the implementation of Student_info . Of course, we could change their name-but suppose, instead, that's wanted to integrate it with the rest of Student_info the code, In order to clarify the it is not intended for public access despite its apparent generality? How would?

Ans: See GitHub.

Accelerated C + +: Programming practice with examples-practice Answers (9th)