#include <stdio.h>
#include <string.h>
#pragma warning(disable: 4996 4013)

/* Declare functions */
void Make(void);

char* __FILENAME;
char* __COMPARE;

int main(int argc, char *argv)
{
    if (argc < 2) {
        printf("\n\tUsage: CountLetter filename string\n");
        return 0;
    }
    __FILENAME = argv[1];
    __COMPARE = argv[2];
    Make();
    return 0;
}

void Make(void)
{
    int count = 0, ch = 0, i = 0, len = strlen(__COMPARE);
    FILE *file;
    
    file = fopen(__FILENAME, "r");
    if (file == NULL) return;

    while (1) {
        ch = fgetc(file);
        if (ch == EOF) break;
        else if (ch == __COMPARE[i]) {
            i++;
            if (i == len) { count++; i = 0; }
        }
        else i = 0;
    }
    
    fclose(file);
    printf("There are %d occurences of %s", count, __COMPARE);
}