That is exactly what a compiler and an interpreter are used for. Hence, it is necessary to convert these “high-level” language programs to binary before the computer can understand the instructions. ![]() In other words, binary is the only language comprehensible to a computer. A computer cannot understand English it can interpret only a stream of 1’s and 0’s. Most of the programs we type in are in English (or some other language). What is a Compiler?īefore moving to lexical analysis in C++, we need to have a basic understanding of a compiler. ![]() We will understand what does a lexical analyzer do? We have also included a simple lexical analyzer program in C++, which should help you learn about how a compiler functions behind the scenes. Today, we’re going to be looking at one of the steps performed by a compiler before it executes the program: it’s called lexical analysis. ![]() Knowing what goes behind the scenes when a program is run can help one understand the source of errors and warnings (which is definitely a big help since it helps optimize the time taken to run a program successfully). One of the most underrated among these would definitely be compiler design. Being a programmer requires all-around knowledge of a lot of subjects.
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