#include<stdio.h>
#include<string.h>
#define SIZE 80 + 1

int getContents(char pattern[]);
int countMatch(char contents[], char pattern[]);

int main(void)
{

  char pattern[SIZE];

  printf ("\nPlease enter a pattern: ");
  scanf ("%s", pattern);
  printf ("Number of matches of the pattern \"%s\": %d\n\n", pattern, getContents(pattern));

  return 0;

} /* end of main program */

int getContents(char pattern[])
{

  FILE *fp;
  char line[SIZE];
  int count = 0;
  fp = fopen ("file.txt", "r");

  if (fp == NULL)
    printf ("Error: cannot open the data file\n\n");
  else
    while ( fscanf(fp, "%[^\n]\n", line) == 1)
    {
       count += countMatch(line, pattern);
    }

  fclose(fp);

  return count;

} /* end of getContents() function */

int countMatch(char contents[], char pattern[])
{

   int i,j,k;
   int count = 0;
   char temp[SIZE];


   for (i = 0; i < strlen(contents); i++)
   {
     k = 0;
     for (j = i; j < (i + strlen(pattern)); j++)
     {
       temp[k++] = contents[j];
     }
     temp[k] = '\0';
     if (strcmp(temp, pattern) == 0)
       count += 1;
   }

   return count;

}  /* end of countMatch() function */