Python 1.2 - Types of language Translators

 

Types of language Translators

Note: Here we will only talk about general conversion i.e. from source code to direct machine code. We will not talk about the code forms which we will get between source code and machine code.

1.   Compiler

Compiler is a program or software which converts the source code written in a high level language into machine code. The compiler reads and executes the entire source code in one go. If there are any errors in the source code (our program) then compiler will report all errors together. So if there are 10 errors in our program then the compiler will report all these 10 errors in one go. Unless we remove all errors, compiler will not execute the code. Once we remove all the errors then compiler will read and execute the entire code again. If the source code is error free then the compiler will successfully execute it and will give the machine code. Languages like C and C++ use compiler.

2.   Interpreter

It also converts the source code written in a high level language into machine code. The interpreter reads and executes the instructions one by one. That is why compiled code is faster than the interpreted code. The Interpreter reports only one error at a time since it executes only one instruction at a time. So if there are 10 errors in our program, then Interpreter will tell these errors in 10 times. If we remove only first error (now there will be 9 errors in our program) and run the code, then interpreter will give the output as far as the code is correct. Then when we remove the second error (now there will be 8 errors in our program) and run the code, then interpreter will give the output as far as the code is correct and so on. But compiler does not work this way. The compiler will only output when there is not a single error in our program but interpreter can give the result even if our program has errors because interpreter reads and executes only one statement at a time but we have to remove all the errors from Python program to get the final result. Languages like Python, and Java use interpreter.

Main difference is that a compiler will read the entire program together in one go and interpreter will read only one statement at a time. For example, if there are 10 statements in a program, then compiler will execute the program in one go whereas the interpreter will take 10 times. 

3.   Assembler

 It is used to convert the source code written in Assembly language into machine code. Assembly language is a low level language. Instructions/commands written in assembly language are called “Mnemonics”.



Comments

  1. Pradeep ChoudharyDecember 5, 2020 at 8:38 AM

    Wow man! amazing explanation. Keep it up bro.

    ReplyDelete

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