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Introduction to Compiler

• A compiler is a translator that converts the high-level language into the machine language.
• High-level language is written by a developer and machine language can be understood by the processor.
• Compiler is used to show errors to the programmer.
• The main purpose of compiler is to change the code written in one language without changing the meaning of the program.
• When you execute a program which is written in HLL programming language then it executes into two parts.
• In the first part, the source program compiled and translated into the object program (low level language).
• In the second part, object program translated into the target program through the assembler.

Fig: Execution process of source program in Compiler