250+ C programs for practice 2021 page no: 11

● Compare two strings using pointers.

● Find reverse of a string using pointers.

● Sort array using pointers.

● Return multiple values from a function using pointers.

11. File Handling

● Create a file and write contents, save and close the file.

● Read file contents and display on the console.

● Read numbers from a file and write even, odd and prime numbers to

separate file.

● Append content to a file.

● Compare two files.

● How to Copy contents from one file to another file.

● Merge two files to the third file.

● Count characters, words and lines in a text file.

● Delete a word from a text file.

● Remove the specific line from a text file.

● Remove empty lines from a text file.

● Find the occurrence of a word in a text file.

● Count occurrences of a word in a text file.

● Count occurrences of all words in a text file.

● Find and replace a word in a text file.

● Replace a specific line in a text file.

● Print source code of the same program.

● Convert uppercase to the lowercase character and vice versa in a text file.