Please complete the following programming with clear explanations. Thanks!

Programming with C

Part 2 Structs and Arrays In this assignment, we will be making a program that reads in students' information and create an examination seating with a number of rows and columns specified by a user. Then it will attempt to assign each student to a seat in an examination. Use the file homework_part_2.c Complete the file and include all the following requested code in the file homework_part_2.c

#include

struct student {

char last_name[30] ;

char first_name[30];

};

struct examination_seating {

struct student **seating;

};

void student_init_default (struct student *p ) {}

void student_init (struct student *p, char *info) {}

void student_to_string (struct student *p ) {}

void examination_seating_init (int rowNum, int columnNum, struct examination_seating *t ) {}

int assign_student_at (int row, int col, struct examination_seating *t, struct student* p) {}

int check_boundaries (int row, int col, struct examination_seating *t) {}

void examination_seating_to_string (struct examination_seating *t ) {} void main() {

struct examination_seating examination_seating;

struct student temp_student;

int row, col, rowNum, columnNum;

char student_info[30];

// Ask a user to enter a number of rows for a examination seating

printf ("Please enter a number of rows for a examination seating.");

scanf ("%d", &rowNum);

// Ask a user to enter a number of columns for a examination seating

printf ("Please enter a number of columns for a examination seating.");

scanf ("%d", &columnNum); // examination_seating examination_seating_init(rowNum, columnNum, &examination_seating);

printf("Please enter a student information or enter \"Q\" to quit.");

/*** reading a student's information ***/

scanf ("%s", student_info); /* we will read line by line **/

while (1 /* change this condition*/ ){

printf (" A student information is read.");

// printing information.

printf ("%s", student_info);

// student

student_init (&temp_student, student_info);

// Ask a user to decide where to seat a student by asking

// for row and column of a seat

printf ("Please enter a row number where the student wants to sit.");

scanf("%d", &row); printf("Please enter a column number where the student wants to sit.");

scanf("%d", &col);

// Checking if the row number and column number are valid

// (exist in the examination that we created.)

if (check_boundaries(row, col, &examination_seating) == 0) {

printf(" row or column number is not valid.");

printf("A student %s %s is not assigned a seat.", temp_student.first_name, temp_student.last_name);

} else {

// Assigning a seat for a student

if (assign_student_at(row, col, &examination_seating, &temp_student) == 1){

printf(" The seat at row %d and column %d is assigned to the student",row, col); student_to_string(&temp_student);

examination_seating_to_string(&examination_seating);

} else {

printf(" The seat at row %d and column %d is taken.", row, col);

}

}

// Read the next studentInfo

printf ("Please enter a student information or enter \"Q\" to quit.");

/*** reading a student's information ***/

scanf("%s", student_info);

} } Step 1. First, you need to create a structure student. It should contain two variables, last_name (char [30]) and first_name (char [30]). In addition, the following functions should be defined. Function Description

void student_init_default (struct student *p)

Assign the default string " ### " to both variables, last_name and first_name. void student_init (struct student *p, char *info) Use the strtok function to extract first name and last name from the variable student, then assign them to each instance variable of the student structure. An example of the input string is: David/Johnson void student_to_string (struct student *p) It prints the initial character of the first name, a period, the initial character of the last name, and a period.An example of such string for the student David Johnson is: D.J. Step 2. You will be creating a structure called examination_seating in the same code file. The structure examination_seating will contain a 2-dimensional array called "seating" of student type. (Note: student is a structure you created above). You will also need to create variables to check rows and columns for the seating (If your code does not contain any of the following functions, points will be deducted.) Define the following functions: Function Description

void examination_seating_init (int rowNum, int columnNum, struct examination_seating *t )

It instantiates a two-dimensional array of the size "rowNum" by "columnNum" specified by the parameters inside the struct t. Then it initializes each student element of this array using the student_init_default function. So, each student will have default values for its instance variables.

int assign_student_at (int row, int col, struct examination_seating *t, struct student* p)

The function attempts to assign the "p" to the seat at "row" and "col" (specified by the parameters of this function). If the seat has a default student, i.e., a student with the last name "###" and the first name "###", then we can assign the new student "p" to that seat and the method returns true. Otherwise, this seat is considered to be taken by someone else, the method does not assign the student and return 0 (false). int check_boundaries (int row, int col, struct examination_seating *t) The function checks if the parameters row and col are valid. If at least one of the parameters "row" or "col" is less than 0 or larger than the last index of the array (note that the number of rows and columns can be different), then it return 0 (false). Otherwise it returns 1 (true). void examination_seating_to_string (struct examination_seating *t ) It prints information of the "seating". It should show the list of students assigned to the seating using the student_to_string function (it shows initials of each student) and the following format: The current seating

--------------------

D.J. #.#. E.T.

#.#. #.#. S.W.

T.C. A.T. #.#. Please see the sample output listed below. After compiling the homework_part_2.c file, you need to execute it. Sample Output: Make sure that your program works at least with this scenario. Please enter a number of rows for a examination seating.

3

Please enter a number of columns for a examination seating.

3

Please enter a student information or enter "Q" to quit.

Mickey/Mouse

A student information is read.

Mickey/Mouse

Please enter a row number where the student wants to sit. 1

Please enter a column number where the student wants to sit.

2

The seat at row 1 and column 2 is assigned to the student M.M. The current seating

--------------------

#.#. #.#. #.#.

#.#. #.#. M.M.

#.#. #.#. #.#. Please enter a student information or enter "Q" to quit.

Daisy/Duck A student information is read.

Daisy/Duck

Please enter a row number where the student wants to sit.

2

Please enter a column number where the student wants to sit.

0 The seat at row 2 and column 0 is assigned to the student D.D. The current seating

--------------------

#.#. #.#. #.#.

#.#. #.#. M.M.

D.D. #.#. #.#. Please enter a student information or enter "Q" to quit.

Clarabelle/Cow A student information is read.

Clarabelle/Cow Please enter a row number where the student wants to sit.

2

Please enter a column number where the student wants to sit.

1 The seat at row 2 and column 1 is assigned to the student C.C. The current seating

--------------------

#.#. #.#. #.#.

#.#. #.#. M.M. D.D. C.C. #.#. Please enter a student information or enter "Q" to quit.

Max/Goof

A student information is read.

Max/Goof

Please enter a row number where the student wants to sit.

0

Please enter a column number where the student wants to sit.

0 The seat at row 0 and column 0 is assigned to the student M.G. The current seating

--------------------

M.G. #.#. #.#.

#.#. #.#. M.M.

D.D. C.C. #.#. Please enter a student information or enter "Q" to quit.

Horace/Horsecollar

A student information is read.

Horace/Horsecollar Please enter a row number where the student wants to sit.

5

Please enter a column number where the student wants to sit.

1

row or column number is not valid.

A student Horace Horsecollar is not assigned a seat. Please enter a student information or enter "Q" to quit.

Sylvester/Shyster

A student information is read.

Sylvester/Shyster Please enter a row number where the student wants to sit.

2

Please enter a column number where the student wants to sit.

0

The seat at row 2 and column 0 is taken.

Please enter a student information or enter "Q" to quit.

Snow/White A student information is read.

Snow/White

Please enter a row number where the student wants to sit.

-1 Please enter a column number where the student wants to sit.

0 row or column number is not valid.

A student Snow White is not assigned a seat.

Please enter a student information or enter "Q" to quit.

Jiminy/Criket A student information is read.

Jiminy/Criket

Please enter a row number where the student wants to sit. 0

Please enter a column number where the student wants to sit.

2 The seat at row 0 and column 2 is assigned to the student J.C.

The current seating

--------------------

M.G. #.#. J.C.

#.#. #.#. M.M.

D.D. C.C. #.#. Please enter a student information or enter "Q" to quit.

Q