This week, make sure you add functionality to keep statistics on the number of correct answers vs. the total number of problems attempted if you haven't already done so.Then, alter the code to allow for floating-point numbers. This requires formatting the output.#include#include#includeint Menu ();int Addition (int x, int y);int Subtraction (int x, int y);int Multiplication (int x, int y);int Division (int x, int y);int valid (char x);intmain (){ int option; srand (time (NULL));/* total number of questions and total correct answers */ int ttlProblems = 0, correctAnswers = 0; option = Menu (); while (option != 5) {/* taking input the difficultyLevel */ char difficultyLevel; printf ("Enter difficultyLevel of question(e,m,h): "); getchar (); // to avoid the new line scanf ("%c", &difficultyLevel); if (valid (difficultyLevel) == 0){ printf ("Wrong difficultyLevel! "); continue;// if invalid input then take the input again.}/* if input is valid then generate the operand */ int num1, num2; if (difficultyLevel == 'E' || difficultyLevel == 'e'){ num1 = rand () % 10 + 1; num2 = rand () % 10 + 1;} else if (difficultyLevel == 'M' || difficultyLevel == 'm'){ num1 = rand () % 100 + 1; num2 = rand () % 100 + 1;} else{ num1 = rand () % 1000 + 1; num2 = rand () % 1000 + 1;}/* do corresponding calculation */ switch (option){case 1: correctAnswers += Addition (num1, num2);// Addition function return 1 for correct answer otherwise 0. ttlProblems++;//increasing the total questions count by 1. break;case 2: correctAnswers += Subtraction (num1, num2);// Substraction function return 1 for correct answer otherwise 0. ttlProblems++; break;case 3: correctAnswers += Multiplication (num1, num2);// Multiplication function return 1 for correct answer otherwise 0. ttlProblems++; break;case 4: correctAnswers += Division (num1, num2);// Division function return 1 for correct answer otherwise 0. ttlProblems++; break;default: printf ("Choose a valid option! ");// not a valid option. break;} option = Menu (); }/* Printing the total question attemped and total correct answers at the end */ printf ("Total number of problems attempted: %d ", ttlProblems); printf ("Total number of correct answers: %d ", correctAnswers);} /* this function prints the menu and take one option as input and return the input taken. */intMenu (){ int option; puts ("Math Practice Program"); puts ("1. Addition"); puts ("2. Subtraction"); puts ("3. Multiplication"); puts ("4. Division"); puts ("5. Quit"); printf ("Enter an option "); scanf ("%d", &option); return option;} /* This function validates that the difficultyLevel provided is valid or not. */intvalid (char x){ if (x == 'm' || x == 'M' || x == 'e' || x == 'E' || x == 'h' || x == 'H') return 1; else return 0;} /* This function is for additionit returns 1 if the answer is correctotherwise return 0;*/intAddition (int x, int y){ int answer, answer1; answer1 = x + y; int times = 1; while (times

Question

This week, make sure you add functionality to keep statistics on the number of correct answers vs. the total number of problems attempted if you haven't already done so.

Then, alter the code to allow for floating-point numbers. This requires formatting the output.

#include<stdio.h>

#include<stdlib.h>

#include<time.h>

int Menu ();

int Addition (int x, int y);

int Subtraction (int x, int y);

int Multiplication (int x, int y);

int Division (int x, int y);

int valid (char x);

int

main ()

{

int option;

srand (time (NULL));

/* total number of questions and total correct answers */

int ttlProblems = 0, correctAnswers = 0;

option = Menu ();

while (option != 5)

{

/* taking input the difficultyLevel */

char difficultyLevel;

printf ("Enter difficultyLevel of question(e,m,h): ");

getchar (); // to avoid the new line

scanf ("%c", &difficultyLevel);

if (valid (difficultyLevel) == 0)

{

printf ("Wrong difficultyLevel!\n");

continue;// if invalid input then take the input again.

}

/* if input is valid then generate the operand */

int num1, num2;

if (difficultyLevel == 'E' || difficultyLevel == 'e')

{

num1 = rand () % 10 + 1;

num2 = rand () % 10 + 1;

}

else if (difficultyLevel == 'M' || difficultyLevel == 'm')

{

num1 = rand () % 100 + 1;

num2 = rand () % 100 + 1;

}

else

{

num1 = rand () % 1000 + 1;

num2 = rand () % 1000 + 1;

}

/* do corresponding calculation */

switch (option)

{

case 1:

correctAnswers += Addition (num1, num2);// Addition function return 1 for correct answer otherwise 0.

ttlProblems++;//increasing the total questions count by 1.

break;

case 2:

correctAnswers += Subtraction (num1, num2);// Substraction function return 1 for correct answer otherwise 0.

ttlProblems++;

break;

case 3:

correctAnswers += Multiplication (num1, num2);// Multiplication function return 1 for correct answer otherwise 0.

ttlProblems++;

break;

case 4:

correctAnswers += Division (num1, num2);// Division function return 1 for correct answer otherwise 0.

ttlProblems++;

break;

default:

printf ("Choose a valid option!\n");// not a valid option.

break;

}

option = Menu ();

}

/* Printing the total question attemped and total correct answers at the end */

printf ("Total number of problems attempted: %d\n", ttlProblems);

printf ("Total number of correct answers: %d\n", correctAnswers);

}

/* this function prints the menu and take one option as input and return the input taken. */

int

Menu ()

{

int option;

puts ("Math Practice Program");

puts ("1. Addition");

puts ("2. Subtraction");

puts ("3. Multiplication");

puts ("4. Division");

puts ("5. Quit");

printf ("Enter an option ");

scanf ("%d", &option);

return option;

}

/* This function validates that the difficultyLevel provided is valid or not. */

int

valid (char x)

{

if (x == 'm' || x == 'M' || x == 'e' || x == 'E' || x == 'h' || x == 'H')

return 1;

else

return 0;

}

/* This function is for addition

it returns 1 if the answer is correct

otherwise return 0;

*/

int

Addition (int x, int y)

{

int answer, answer1;

answer1 = x + y;

int times = 1;

while (times <= 3)

{

printf ("\n%d + %d = ?...\n", x, y);

printf ("Enter answer:");

scanf ("%d", &answer);

if (answer == answer1)

{

printf ("\nCorrect!\n\n");

return 1;

}

else

{

printf ("Incorrect!\n\n");

if (times < 3)

printf ("Sorry...try again with a different answer.\n");

}

times++;

}

return 0;

}

int

Subtraction (int x, int y)

{

int answer, answer1;

answer1 = x - y;

int times = 1;

while (times <= 3)

{

printf ("\n%d - %d = ?...\n", x, y);

printf ("Enter answer:");

scanf ("%d", &answer);

if (answer == answer1)

{

printf ("\nCorrect!\n\n");

return 1;// return 1 for correct answer

}

else

{

printf ("Incorrect!\n\n");

if (times < 3)

printf ("Sorry...try again with a different answer.\n");

}

times++;

}

return 0;

}

int

Multiplication (int x, int y)

{

int answer, answer1;

answer1 = x * y;

int times = 1;

while (times <= 3) // user can attempt upto three times.

{

printf ("\n%d * %d = ?...\n", x, y);

printf ("Enter answer:");

scanf ("%d", &answer);

if (answer == answer1)

{

printf ("\nCorrect!\n\n");

return 1;

}

else

{

printf ("Incorrect!\n\n");

if (times < 3)

printf ("Sorry...try again with a different answer.\n");

}

times++;

}

return 0;

}

int

Division (int num1, int num2)

{

int remainder, remainder1, answer, answer1;

answer1 = num1 / num2;

remainder1 = num1 % num2;

int times = 1;

while (times <= 3)

{

printf ("\n%d / %d = ?...\n", num1, num2); // printing the question

printf ("Enter quotient:");

scanf ("%d", &answer);

printf ("Enter remainder:");

scanf ("%d", &remainder);

if (answer == answer1 && remainder == remainder1)

{

printf ("\nCorrect!\n\n");

return 1;// return 1 for correct answers

}

else

{

printf ("Incorrect!\n\n");

if (times < 3)

printf ("Sorry...try again with a different answer.\n");

}

times++;

}

return 0;

Accepted Answer

#include #include #include // for fabs…