Compiler & Interpreter

Compiler & Interpreter

Compilers and interpreters are used to convert the code of high level language into machine language. The high level program is known as source program and the corresponding machine level program is known as object program. Although both compilers and interpreters perform the same task but there is a difference in their working

Compiler

          A compiler searches all the errors of a program and lists them. If the program is error free then it converts the code of program into machine code and then the program can be executed by separate commands.

Interpreter

         An interpreter checks the errors of a program statement by statement. After checking one statement, it converts that statement into machine code and then executes that  statement. The process continues until the last statement of program occurs.

Static & Dynamic Linking

C Program’s Life Cycle !!

C Program’s Life Cycle !!

What are C libraries?

p Pre-compiled functions that come with the C compiler.

p The functions are grouped in different packages called libraries.

p To use functions included in a library, include the header file specified for that library in your program.

p Exemples:

#include <math.h>

#include <conio.h>

#include <stdio.h>

Why C Programming Language? Features !!

Why C !!:

¨ C is a widely used portable high level programming language

¨ High level, but also let’s your program closer to the metal.

¨ Used for embedded programming

¨ Many language have a c pedigree

¨ it can manipulate bits of computer memory. 

¨ can run on different platforms with very little modification. 

Features of C Language:

There are many features of c language are given below:

1)   Simple

2)   Machine Independent or Portable

3)   Mid-level programming language

4)   structured programming language

5)   Rich Library

6)   Memory Management

7)   Fast Speed

8)   Pointers

9)   Recursion

10) Extensible