YACC program to recognize strings of { aⁿb | n≥5 }

Problem: Write YACC program to recognize strings of { aⁿb | n≥5 } Explanation: Yacc (for “yet another compiler compiler.”) is the standard parser generator for the Unix operating system. An open source program, yacc generates code for the parser in the C programming language. The acronym is usually rendered in lowercase but is occasionally seen as YACC or Yacc. Examples:

Input: ab
Output: invalid string

Input: aaaaab
Output: valid string

Input: aabb
Output: invalid string

Input: aaaaaaab
Output: valid string

Input: aaaaaabb
Output: invalid string 

Lexical Analyzer Source Code: Parser Source Code: Output: 👁 Image