https://github.com/ranaaditya/lex-yacc-programs

first step towards crafting compilers
https://github.com/ranaaditya/lex-yacc-programs

bison bison-yacc compiler compiler-design flex hacktoberfest hacktoberfest2021 lex lexical-analyzer lexical-parser yaac

Last synced: 25 days ago
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first step towards crafting compilers

• Host: GitHub
• URL: https://github.com/ranaaditya/lex-yacc-programs
• Owner: ranaaditya
• Created: 2020-10-24T09:02:48.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2021-10-31T17:25:09.000Z (about 3 years ago)
• Last Synced: 2024-05-01T12:22:32.132Z (6 months ago)
• Topics: bison, bison-yacc, compiler, compiler-design, flex, hacktoberfest, hacktoberfest2021, lex, lexical-analyzer, lexical-parser, yaac
• Language: Lex
• Homepage:
• Size: 20.5 KB
• Stars: 4
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Lex-Yacc-Programs

## Installation

```

sudo apt-get install flex

sudo apt-get install byacc

sudo apt-get install bison

```

## Compile & Run

### `Lex` Programs

```bash

lex  && gcc -lfl lex.yy.c && ./a.out < input.txt | sed '/^$/d'

```

We use `sed` to remove empty lines.

### `Lex + Yacc` Programs

```bash

flex 

bison -dy 

gcc -lfl lex.yy.cc y.tab.c

./a.out < input.txt | sed '/^$/d'

```

OR (in short)

```bash

flex  && bison -dy  && gcc -lfl lex.yy.cc y.tab.cc && ./a.out < input.txt | sed '/^$/d'

```

We use `sed` to remove empty lines.

## Contribution

Feel free to raise issues and send PRs for new programms