#include<stdio.h>
#define FNAME_SIZE 40 + 1
#define LNAME_SIZE 40 + 1
#define ADDRESS_SIZE 80 + 1
#define PHONE_SIZE 10

void storeData(char [], char [], char [], char[]);
void clearInput();

int main(void)
{

  char firstName[FNAME_SIZE], lastName[LNAME_SIZE];
  char streetAddress[ADDRESS_SIZE];
  char phoneNumber[PHONE_SIZE];

  storeData(lastName, firstName, streetAddress, phoneNumber);

  return 0;

} /* End of main program */

 
void storeData(char firstName[], char lastName[], char streetAddress[], char phoneNumber[])
{

  FILE *fp;
  char goAgain = 'Y';
 
  fp = fopen("phone.txt", "w");

  while (toupper (goAgain) == 'Y')
  {

    printf ("Please enter last name: ");
    scanf ("%40[^\n]", lastName);
    clearInput();

    printf ("Please enter first name: ");
    scanf ("%40[^\n]", firstName);
    clearInput();

    printf ("Please enter the street address: ");
    scanf ("%80[^\n]", streetAddress);
    clearInput();

    printf ("Please enter phone number: ");
    scanf ("%10[^\n]", phoneNumber);
    clearInput();

    fprintf (fp, "%s;%s;%s;%s\n", lastName, firstName, streetAddress, phoneNumber);

    printf ("Go Again? (Y/N): ");
    scanf (" %c", &goAgain);
    clearInput();

   } /* End of while loop to continually write to file until "n" or "N" at Go Again? prompt */

   fclose(fp);

} /* End of storeData() function */

void clearInput(void)
{
  while(getchar() != '\n')
     ;
} /* End of clearInput() function */