fxn call in switch case.c

#include <stdio.h>
#include <stdlib.h>

void ft_modulus (int n1, int n2);
void ft_multiplication (int n1, int n2);
void ft_division (int n1, int n2);

int main()
{
    printf("#####****MATHS CHECKER****######\n");
    //user prompt
    printf("MENU\n");
    //menu options
    printf("1 => MODULUS\n");
    printf("2 => MULTIPLICATION\n");
    printf("3 => DIVISION\n");
    printf("4 => EXIT\n");

    int num1, num2;
    //user prompt
    printf("Enter 2 random numbers.\n");
    scanf("%d%d", &num1, &num2);

    int option;
    //user prompt
    printf("Choose an operation from menu above to be  performed on the numbers:\n");
    scanf("%d", &option);

    switch (option)
    {
        case 1: ft_modulus(num1, num2);
                break;

        case 2: ft_multiplication(num1, num2);
                break;

        case 3: ft_division(num1, num2);
                break;

        case 4: break;

    }


    return 0;
}

void ft_modulus(int n1, int n2)
{
  int correctAnswer, userAnswer, newAnswer;

  correctAnswer = n1%n2;

  //user prompt
  printf("Enter answer you got:\n");
  scanf("%d", &userAnswer);

  if (userAnswer == correctAnswer)
  {
      printf("Congrats!!!Your answer is correct.\n");
  }

  else if (userAnswer != correctAnswer)
  {
      printf("Incorrect:(Please try again.\n");
      printf("Enter new answer:\n");
      scanf("%d", &newAnswer);

      if (newAnswer == correctAnswer)
      {
          printf("Congrats!!!Your answer is correct.\n");
      }

      else if (newAnswer != correctAnswer);
      {
          printf("Incorrect:(You have exhausted all your chances.\n");
          printf("%d %% %d = %d", n1, n2, correctAnswer);
      }
  }

}

void ft_multiplication (int n1, int n2)
{
  int correctAnswer, userAnswer, newAnswer;

  correctAnswer = n1*n2;

  //user prompt
  printf("Enter answer you got:\n");
  scanf("%d", &userAnswer);

  if (userAnswer == correctAnswer)
  {
      printf("Congrats!!!Your answer is correct.\n");
  }

  else if (userAnswer != correctAnswer)
  {
      printf("Incorrect:(Please try again.\n");
      printf("Enter new answer:\n");
      scanf("%d", &newAnswer);

      if (newAnswer == correctAnswer)
      {
          printf("Congrats!!!Your answer is correct.\n");
      }

      else if (newAnswer != correctAnswer);
      {
          printf("Incorrect:(You have exhausted all your chances.\n");
          printf("%d * %d = %d", n1, n2, correctAnswer);
      }
  }

}

void ft_division (int n1, int n2)
{
  int correctAnswer, userAnswer, newAnswer;

  correctAnswer = n1/n2;

  //user prompt
  printf("Enter answer you got:\n");
  scanf("%d", &userAnswer);

  if (userAnswer == correctAnswer)
  {
      printf("Congrats!!!Your answer is correct.\n");
  }

  else if (userAnswer != correctAnswer)
  {
      printf("Incorrect:(Please try again.\n");
      printf("Enter new answer:\n");
      scanf("%d", &newAnswer);

      if (newAnswer == correctAnswer)
      {
          printf("Congrats!!!Your answer is correct.\n");
      }

      else if (newAnswer != correctAnswer);
      {
          printf("Incorrect:(You have exhausted all your chances.\n");
          printf("%d / %d = %d", n1, n2, correctAnswer);
      }
  }

}