Can someone please design the method to find the frequency of occurrences of any given word in a book?

Question

Given a 2d array, u need to sort the 2 diagonals independently.
And the elements in diagonal should remain in diagonal only.

INPUT =>
24 2 3 4 7

6 13 8 5 10

11 12 9 14 15

16 21 18 25 20

17 22 23 24 1

OUTPUT =>
1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

21 22 23 24 25

Answer 1

You can use < strstr() > to find out the frequency of occurrences of a given word.

Procedure to do:
1:  open your book using    fd =  fopen("book_name", "r");
2:  get your word which you want to find the occurrence.
3:  inside a loop probably    while(till end of file) {}
          inside the while()  
              1.  read line by line (you can use  < fgets() >), then
              2.  call strstr()  // validate the required word, if matched increment the count
                   /*
                       It will give the location of the first occurrence of the given sub_string (word).
                       so you have to call this inside a loop (on the result of fgets()) ... to check  multiple occurrence 
                       of the word in a single line.
                  */ 
                    // see the < man strstr > to know how to use.
              3.  follow this till end of the file.
4:  close()  the file descriptor.

Comments

You may need to modify a bit to accommodate the case of more then one occurrences of the word in the single line.

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Yes you are right, I have already pointed out that modification inside
point no 3's 2nd point.
i.e you have to apply another loop on the resulted line.