What Is Bug And Debug ?

In computer technology, a bug is a coding error in a computer program. The process of finding bugs -- before users do -- is called debugging. Debugging starts after the code is written and continues in stages as code is combined with other units of programming to form a software product, such as an operating system or an application.

Bugs are often discovered after a product is released or during public beta testing. When this occurs, users have to find a way to avoid using the buggy code or get a patch from the software developers.

A bug is just one kind of problem that a program can have. Programs can run bug-free and still be difficult to use or fail in some major objective. This kind of flaw is more difficult to test for. A well-designed program developed using a well-controlled process results in fewer bugs per thousands of lines of code. 

Types Of Software Bugs :

Different kinds of bugs cause computers to malfunction. These are some of the most common types of computer bugs:

Arithmetic: Sometimes referred to as calculation errors, arithmetic bugs are math errors in code that cause it not to function.

Interface: An interface bug occurs when incompatible systems are connected to the computer. The problem can come from a piece of hardware or software. An application programming interface could be an example of an interfacing bug.

Logic: These errors happen when the logic of the script causes the program to output the wrong information or get stuck and provide no output. One of example of a logic error is an infinite loop where a sequence of code runs continuously.

Syntax: These bugs come from code written with the wrong characters. Different programming languages have different syntaxes, so using syntax from one could cause a bug in another.

What Is Debug ?

      Debugging is the process of detecting and removing of existing and potential errors (also called as ‘bugs’) in a software code that can cause it to behave unexpectedly or crash. To prevent incorrect operation of a software or system, debugging is used to find and resolve bugs or defects.

        To debug a program, user has to start with a problem, isolate the source code of the problem, and then fix it. A user of a program must know how to fix the problem as knowledge about problem analysis is expected. When the bug is fixed, then the software is ready to use. Debugging tools (called debuggers) are used to identify coding errors at various development stages.