i need to code compiler construction phase 1 lexical analyzer in which i have to read file which firstly contains rows then columns and then the

i need to code compiler construction phase 1 lexical analyzer in which i have to read file which firstly contains rows then columns and then the transition table with first rows having ascii of characters and and at 128 index store dfa was accepted with some number like 101 and rejected state with -1 this file will be given randomnly in this format how to code it in c++first column should be filled by states used and then table should be dynamically stored in arrayhow to do it?