Automat

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

int Automat(int c, int status, int *match);

int main()
{
    FILE *input;
    int c;
    int status = 0;
    int match = 0;
    char fName[32];
    int count = 0;

    printf("Enter name: ");
    scanf("%s", &fName);

    if (!(input = fopen(fName, "r")))
    {
        printf("The file does not exist.\n");
        system("pause");
        exit(1);
    }

    while ((c = fgetc(input)) != EOF)
    {
        status = Automat(c, status, &match);
        if (match == 2)
        {
            count++;
            match = 0;
        }
    }

    printf("Found matches: %d\n", count);

    system("pause");
    return 0;
}

int Automat(int c, int status, int *match)
{
    switch (status)
    {
    case 0:
        if (c == 'a')
        {
            *match = 1;
            status = 1;
        }
        else
        {
            *match = 0;
            status = 0;
        }
        break;

    case 1:
        if (c == 'b')
        {
            *match = 2;
            status = 0;
        }
        else
        {
            *match = 0;
            status = 0;
        }
        break;
    }
    return status;
}