Function Implementation with Data Abstraction in C Programming 1. Create a new file and SAVE as MATHV1.H  Define and Implement the following functions:  int sum(int x, int y);  - returns the computed sum of two numbers x and y  int diff(int x, int y);  - returns the computed difference of two numbers x and y.  Make sure that the larger number is deducted  by the smaller number to avoid a negative answer  long int prod(int x, int y);  - returns the computed product of two number x and y  float quot(int x, int y);  - returns the computed quotient of two numbers x and y.  Make sure that the larger number is always the numerator  and divided by the smaller number to avoid division  by zero error.  int mod(int x, int y);  - returns the computed remainder of two numbers x and y using  the modulo operator % 2. Create another new file and save as MYTOOLS.H  void center(int row, char str[]);  /*centers text across the screen  -calculate here for the center col using  the formula col=(80-strlen(str))/2;  -then use gotoxy(col,row) to print the value in string  str*/  void outString(int col,int row,char str[]);  /*outputs the string str at the specified col and row numbers.*/  void drawSBox(int x1,int y1, int x2, int y2);  /* draws a single-line box */  void drawDBox(int x1,int y1, int x2, int y2);  /* draws a double-line box */  note: you may place here the definition of your function  void menu();  /* to display this menu layout:  PROGRAMMING 2  FUNCTION IMPLEMENTATION  w/ DATA ABSTARACTION  =====================================  ~~~~~ BASIC MATH OPERATIONS ~~~~~  MODULO [%]  DIVIDE [ / ]  MULTIPLY [ * ]  ADD [ +]  SUBTRACT [ - ]  Enter math operator[%/*+-]:  ======================================= 3. Define the above functions declared in both MATHV1.H and MYTOOLS.H. Save them as MATHV1.C and MYTOOLS.C respectively. 4. Create another new file and save it as FUNCTIONS.C  Include the files "MYTOOLS.H" and "MATHV1.H" Requirements/Specifications:  -write a function main() to use all functions defined in MATHV1.H and MYTOOLS.H  -invoke the menu layout above w/ double-line box  -prompt the user to input and select a math operator  -the inputted math operator that are valid [% or / or * or + or - only]. If it's invalid, prompt the user a message that it's invalid and ask him /her to input again  -If the math operator entered by the user is valid, draw a small double-line box and prompt the user to input two numbers, like this:  _____________________________  Enter 1st number:  Enter 2nd number:  Result is :  _____________________________  Press 1 to continue or 0 to exit...  - Repeat the entire process while user res

Function Implementation with Data Abstraction in C Programming

1. Create a new file and SAVE as MATHV1.H
 Define and Implement the following functions:
 int sum(int x, int y);
 - returns the computed sum of two numbers x and y
 int diff(int x, int y);
 - returns the computed difference of two numbers x and y.
 Make sure that the larger number is deducted
 by the smaller number to avoid a negative answer
 long int prod(int x, int y);
 - returns the computed product of two number x and y
 float quot(int x, int y);
 - returns the computed quotient of two numbers x and y.
 Make sure that the larger number is always the numerator
 and divided by the smaller number to avoid division
 by zero error.
 int mod(int x, int y);
 - returns the computed remainder of two numbers x and y using
 the modulo operator %
2. Create another new file and save as MYTOOLS.H
 void center(int row, char str[]);
 /*centers text across the screen
 -calculate here for the center col using
 the formula col=(80-strlen(str))/2;
 -then use gotoxy(col,row) to print the value in string
 str*/
 void outString(int col,int row,char str[]);
 /*outputs the string str at the specified col and row numbers.*/
 void drawSBox(int x1,int y1, int x2, int y2);
 /* draws a single-line box */
 void drawDBox(int x1,int y1, int x2, int y2);
 /* draws a double-line box */
 note: you may place here the definition of your function
 void menu();

 /* to display this menu layout:
 PROGRAMMING 2
 FUNCTION IMPLEMENTATION
 w/ DATA ABSTARACTION
 =====================================
 ~~~~~ BASIC MATH OPERATIONS ~~~~~

 MODULO [%]
 DIVIDE [ / ]
 MULTIPLY [ * ]
 ADD [ +]
 SUBTRACT [ - ]
 Enter math operator[%/*+-]:
 =======================================
3. Define the above functions declared in both MATHV1.H and MYTOOLS.H. Save them as
MATHV1.C and MYTOOLS.C respectively.
4. Create another new file and save it as FUNCTIONS.C
 Include the files "MYTOOLS.H" and "MATHV1.H"
Requirements/Specifications:
 -write a function main() to use all functions defined in MATHV1.H and MYTOOLS.H
 -invoke the menu layout above w/ double-line box
 -prompt the user to input and select a math operator
 -the inputted math operator that are valid [% or / or * or + or - only]. If it's invalid, prompt
the user a message that it's invalid and ask him /her to input again
 -If the math operator entered by the user is valid, draw a small double-line box and
prompt the user to input two numbers, like this:
 _____________________________
 Enter 1st number:
 Enter 2nd number:
 Result is :
 _____________________________
 Press 1 to continue or 0 to exit...

 - Repeat the entire process while user response is
 1 (for continue), program exits when user
 replies 0 (means to exit)