What is code refactoring

Question

please tell me how to explain what is code refactoring with a easy example.

tri_inn · Answer

Sorry i do not understand c language. so please come with a c# sample code.

Manikandan Murugesan · Answer

Refactoring is a process of describing and simplifying the design of existing code without changing its behaviour. For Example: Calulating the average of the student using C program. #include #include int main() { int m1 m2 m3 m4 m5 per ; clrscr(); printf( Enter marks in five subjects  ) ; scanf( %d %d %d %d %d  &m1 &m2 &m3 &m4 &m5 ) ; per = ( m1 + m2 + m3 + m4 + m5 ) / 5 ; if (per>=60) printf( First division ); else { if (per>=50) printf( Second division ) ; else { if (per>=40) printf( Third division ) ; else printf( Fail ) ; getch(); } } } Observe the Program it contains three disadvantages 1.It uses number of conditions are increasing the level of identation. 2.It needs to be exercised to match the corresponding if 's and else 's. 3.It needs to be exercised to match the corresponding pair of braces. By using the code refactoring this can be reduced by the #include #include int main() { int m1 m2 m3 m4 m5 per ; clrscr(); printf ( Enter marks in five subjects  ) ; scanf ( %d %d %d %d %d  &m1 &m2 &m3 &m4 &m5 ) ; per = ( m1 + m2 + m3 + m4 + m5 ) / 5 ; if ( per >= 60 ) printf ( First division ) ; if ( ( per >= 50 ) && ( per printf ( Second division ) ; if ( ( per >= 40 ) && ( per printf ( Third division ) ; if ( per printf ( Fail ) ; getch(); } By comparing both the programs the second one has two advantages they are 1.The lines of the program reduced. 2.There is the change in the coding structure but it dows not change its behaviour.  Code refactoring is the process of restructuring existing computer code—changing the factoring—without changing its external behavior. Refactoring improves nonfunctional attributes of the software. code refactoring is used in the Agile development to improve the code readability to simplify code structure etc.. Refer the link for the above reference : https://stackoverflow.com/questions/1025844/what-is-refactoring-and-what-is-only-modifying-code