Compiler Building

Question

how to build compiler uses lexical analyzer ??
c/c++

Answer 1

Sorry, the question is a bit unclear. If you mean "how to build compiler using lexical analyser", then the answer is that the compilation process has much more to it than lexical analysis. Lexical analysis only parses the code into tokens. Here is a basic overview of the phases of the compilation process
https://www.tutorialspoint.com/compiler_design/compiler_design_phases_of_compiler.htm