How can a words can be search from a text file. also search the characters & sentences..

Answer 1

I have made two example codes awhile back. One locating the occurrences of the word, the other locating the word and extracting it. There is some explanation comments inside if you're interested:

https://code.sololearn.com/cfEumQHmmC5I/?ref=app

https://code.sololearn.com/cah4G1rZuD8E/?ref=app

Answer 2

if regrex used thn it onl possivle to find out the words & how many times it is present in the file..but how can it possible to search a word also present in the sentences & the character of the word??