ahad1317 / compilerdesign--18csc304j

Compiler Design experiments including c, flex, bison, scanner, java and other codes

🚀 Running Flex Programs

Flex is a powerful tool for generating scanners: programs that recognize lexical patterns in text. Use this guide to quickly start running Flex programs on Windows.

📥 Download Flex Tool

First, you need to download the Flex tool for Windows:

• Download here: Flex Windows (Lex and Yacc)

🛠️ Setup and Usage

Follow these steps to set up and run your Flex programs:

Step 1: Open Flex Tool

Once downloaded, open the Flex tool.

Step 2: Create a New File

Create a new file by selecting the "lex" option.

Step 3: Enter Your Lex Code

Paste your Lex code into the new file and save it with the .l extension. Ensure you select "All Files" as the file type.

Step 4: Compile and Build

Now, proceed with the following:

1. Click on 1 (Lex File Compile)
2. Click on 2 (Lex Build)
3. Click on 6 (Open CMD)

Step 5: Run Your Program

When the command prompt opens, type in the file name you saved with the .exe extension and enter your input to view the result.

🚀 Running Scanner Programs

Save the file "name: file2.star.txt" you want to scan example:

Now save the lex code in same folder as the scanner file, make sure the file name is same :

Follow above step 4 and step 5 to build and compile: output:

🚀 Running Bison Programs

Create and compile lex file by clicking 1 (lex file compile) :

Create a new bison file with ".y" as extension

after entering bison code, click 3 (yacc compile) :

open cmd by clicking 6 (open cmd) and type in following commands :

Enter your query and it will display the output.

🌟 Conclusion

That's it! You are now ready to run and test your own Flex programs on Windows. Enjoy coding your scanner projects!

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Feel free to reach out or contribute to this repository if you have any suggestions or improvements!