Write function definition for DISP3CHAR() in C++ to read the content of a text file KIDINME.TXT, and display all those words, which have three characters in it.
Example: If the content of the file KIDINME.TXT is as follows:

When I was a small child, I used to play in the garden with my grand mom. 
Those days were amazingly funful and I remember all the moments of that time

The function DISP3CHAR() should display the following:

was the mom and all the

A text file named MATTER.TXT contains some text, which needs to be displayed such that every next character is separated by a symbol ‘#’. Write a function definition for HashDisplay () in C++ that would display the entire content of the file MATTER.TXT in the desired format.
Example:
If the file MATTER.TXT has the following content stored in it:
THE WORLD IS ROUND
The function HashDisplay () should display the following content:
T#H#E# #W#O#R#L#D# #I#S# #R#O#U#N#D#

Polina Raj has used a text editing software to type some text in an article. After saving the article as MYNOTES.TXT , she realised that she has wrongly typed alphabet K in place of alphabet C everywhere in the article. Write a function definition for PURETEXT() in C++ that would display the corrected version of the entire article of the file MYNOTES.TXT with all the alphabets “K” to be displayed as an alphabet “C” on screen .
Note: Assuming that MYNOTES.TXT does not contain any C alphabet otherwise.
Example:
If Polina has stored the following content in the file MYNOTES.TXT :

The function PURETEXT() should display the following content:

Write function definition for SUCCESS () in C++ to read the content of a text file STORY.TXT count the presence of world STORY and display the number of occurrence of this word.
Note :
-The word STORY should be an independent word
-Ignore type cases (i.e. lower/upper case)
Example: If the content of the file Story.TXT is as follows:

Success shows others that we can do it. 
It is possible to achieve success with hard work. Lot of money does not mean SUCCESS.

The function SUCCESS () should display the following:

3

Write function definition for TOWER() in C++ to read the content of a text file WRITEUP.TXT, count the presence of word TOWER and display the number of occurrences of this word.
Note :
‐ The word TOWER should be an independent word
‐ Ignore type cases (i.e. lower/upper case)
Example: If the content of the file WRITEUP.TXT is as follows:

The function TOWER () should display the following:

Aditi has used a text editing software to type some text. After saving the article as WORDS.TXT , she realised that she has wrongly typed alphabet J in place of alphabet I everywhere in the article.
Write a function definition for JTOI() in C++ that would display the corrected version of entire content of the file WORDS.TXT with all the alphabets “J” to be displayed as an alphabet “I” on screen .
Note: Assuming that WORD.TXT does not contain any J alphabet otherwise.
Example: If Aditi has stored the following content in the file WORDS.TXT :

WELL, THJS JS A WORD BY JTSELF. YOU COULD STRETCH THJS TO BE A SENTENCE

The function JTOI() should display the following content:

WELL, THIS IS A WORD BY ITSELF. YOU COULD STRETCH THIS TO BE A SENTENCE

Write function definition for WORD4CHAR() in C++ to read the content of a text file FUN.TXT, and display all those words, which has four characters in it.
Example: If the content of the file fun.TXT is as follows:

The function WORD4CHAR() should display the following:

Write a program to count alphabets in a given file “NOTES.TXT”. What would be  the output when this file is tested with the NOTES.TXT  file containing the following lines.

This is first line
This is second line
This is third line

Write a function to count and return the number of words present in the filename passed to it as an argument. Assume that each word is separated by a single space and their is no space in the
beginning and end of the file.

Also demonstrate the use of this function in the main routine assuming a file NOTES.TXT that contains the following text.

This is first line
This is second line
This is third line

Write a function to count and return the number of space characters present in the filename passed to it as an argument. Also show implementation of this function in the main routine using NOTES.TXT file that contain the following data

This is first line
This is second line
This is third line

Write a program to display the lines starting with character ‘A’ or ‘a’ in the file “PROG.TXT” that contains following text. Also display the count of such lines.

A programmer should always be hardworking.
For that matter everyone should be hardworking.
A programmer is always under pressure.
Yes! not everyone is always under pressure.

Write a program to display all the words in a file that are three character words. Assume that filename is
MATTER.TXT and it contains the following matter.

The quick brown fox jumps over a lazy dog

Raju is trying to run the following program in his compiler, but he is unable to do the some due to absence of some header files he forgot to include. Please help him.

int main()
{
ifstream ipfile("LIST.TXT",ios::in);
char ch;
while(!ipfile.eof())
{
ipfile.get(ch);
if(isdigit(ch)) cout<<ch<<" ";
} 
ipfile.close(); 
return 0;
}