# Occurrences Counter

This program counts the number of characters, digits, and vowels in a given string.

## Features

- Counts total number of characters in the input string
- Counts the number of digits (0-9) in the input string
- Counts the number of vowels (a, e, i, o, u, case-insensitive) in the input string
- Provides a simple command-line interface for input

## Dependencies

- GCC compiler
- Standard C library
- Check unit testing framework (for running tests)
- make utility
- gzip (for man page compression)

If GCC is unavailable, follow the instructions on how to install it here: https://gcc.gnu.org/install/

If check is unavailable, follow the instructions on how to install it here: https://libcheck.github.io/check/web/install.html

## Building and Installing for POXIS systems (not compatible with Windows, or other non-POSIX platforms)

1. Open a terminal in the project directory.
2. To install the program and man page (requires root privileges):
   ```bash
   sudo make install
   ```
   This will install the program to `/usr/local/bin` and the man page to `/usr/local/share/man/man1`.
3. To uninstall:
   ```bash
   sudo make uninstall
   ```
4. To clean the build files:
   ```bash
   make clean
   ```

## Running the Program

After installation, you can run the program from any directory:
```bash
occurrences
```

To view the man page:
```bash
man occurrences
```

## Usage

Warning: This program is only compatible with ASCII input, this doesn't include tab or new line characters

1. Run the program.
2. Enter a string when prompted.
3. The program will output the number of characters, digits, and vowels in the input string.

## Testing

To run the unit tests:
```bash
make test
```

This will compile and run the test suite, which checks various scenarios including but not limited to empty strings, strings with only vowels, strings with only digits, and mixed input.