Question

You're to write a C++ program that analyzes the contents of an external file called data.txt. (You can create this file yourself using nano, that produces a simple ASCII text file.) The program you write will open data.txt, look at its contents and determine the number of uppercase, lowercase, digit, punctuation and whitespace characters contained in the file so that the caller can report the results to stdout. Additionally, the function will return the total number of characters read to the caller.

In order to derive all these vital statistics, you'll have to write a function to do the dirty work. The name of the function is ReadFile and here's what a sample function call looks like:

    totalChars = ReadFile(inFile, totalUpper, totalLower, totalDigits, totalPunct, totalSpace);

So what's the first thing to do? I recommend drawing a structure chart! This will help clarify how the ReadFile function is to be called, and what its logical inputs and outputs are. A few minutes spent on the chart will help you move closer to the coding phase more easily.

The ReadFile function is going to examine every single character in the file, including whitespace characters (which means you'll have to use character I/O, which means you'll want to use the .get(), .put() and .eof() functions). As characters are read from the input stream, you'll need to recognize whether they're uppercase, lowercase, digits, punctuation characters, or whitespace characters (e.g., blank, tab, newline, etc.). You could certainly write the code to do this yourself (it's easy to do), but the good news is that you don't have to! Recall that the standard libraries already have some character testing functions for you to use, like isdigit, isupper, islower, isspace, etc. (don't forget to #include the header file cctype). Only use cctype, fstream, and iostream.

Once you've got an executable, you should try altering the contents of the file data.txt and running your program again so you can see if everything is working correctly. Try different versions that contain random text, only digits, only lowercase characters, only whitespace, or even a completely empty file.

Sample run:

File "data.txt" contains the following:
  Uppercase letters:               158
  Lowercase letters:              1765
  Digits:                           17
  Punctuation characters:          948
  Whitespace characters:          1447
  Total characters read:          4335

Answer 1

aboutComputer.txt

A computer is a device that can be instructed to carry out an
arbitrary set of arithmetic or logical operations automatically.
The ability of computers to follow a sequence of operations
called a program make computers very flexible and useful.
Since ancient times simple manual devices like the abacus
aided people in doing calculations. Early in the Industrial
Revolution, some mechanical devices were built to automate
long tedious tasks, such as guiding patterns for looms.

_________________
#include <fstream>
#include <iostream>
#include <cctype>

using namespace std;

int ReadFile(ifstream& inFile, int& totalUpper, int& totalLower, int& totalDigits, int& totalPunct,
int& totalSpace);
int main()
{

// Declaring variables

int totalChars = 0, totalUpper = 0, totalLower = 0, totalDigits = 0;
int totalPunct = 0, totalSpace = 0;
// defines an input stream for the data file
ifstream inFile;

// Opening the input file
inFile.open("aboutComputer.txt");

// checking whether the file name is valid or not
if (inFile.fail())
{
cout << "** File Not Found **";
return 1;
}
else
{
// calling the function
totalChars = ReadFile(inFile, totalUpper, totalLower, totalDigits, totalPunct, totalSpace);

// Closing the intput file
inFile.close();

// Displaying the output
cout << "File \"aboutComputer.txt\" contains the following:" << endl;
cout << "Uppercase letters:" << totalUpper << endl;
cout << "Lowercase letters:" << totalLower << endl;
cout << "Digits:" << totalDigits << endl;
cout << "Punctuation characters:" << totalPunct << endl;
cout << "Whitespace characters:" << totalSpace << endl;
cout << "Total characters read:" << totalChars << endl;
}

return 0;
}

// Function wehich will read the data from the file and check each character type
int ReadFile(ifstream& inFile, int& totalUpper, int& totalLower, int& totalDigits, int& totalPunct,
int& totalSpace)
{
char ch;
int totalChars = 0;
while (!inFile.eof())
{

inFile.get(ch);
totalChars++;
if (isupper(ch))
{
totalUpper++;
}
if (islower(ch))
{
totalLower++;
}
if (isdigit(ch))
{
totalDigits++;
}
if (isspace(ch))
{
totalSpace++;
}
if (ispunct(ch))
{
totalPunct++;
}
}
return totalChars;
}

__________________

Output:

_____________Could you rate me well.Plz .Thank You