1.      Program to search for a specific word in a file and count its occurrences.

1. #include <iostream.h>

2. #include <fstream.h>

3. #include <string.h>

4. #include<conio.h>

5. int main() {

6.     ifstream fin("input.txt");

7.     char word[50], line[100];

8.     int count = 0;

9.  

10.     cout << "Enter the word to search: ";

11.     cin.getline(word, 50);

12.  

13.     while (fin.getline(line, 100)) {

14.                 char *ptr = strstr(line, word);

15.                 while (ptr != NULL) {

16.                     count++;

17.                     ptr = strstr(ptr + 1, word);

18.                 }

19.     }

20.  

21.     fin.close();

22.     cout << "The word '" << word << "' occurs " << count << " times." << endl;

23.     getch();

24.     return 0;

26. }