Functions are used for dividing a large code into module, due to this we can easily debug and maintain the code. For example if we write a calculator programs at that time we can write every logic in a separate function. Any function can be called many times.
Advantages of Function
- Code Reusuability
- Develop an application in module format
- Easy to debug the program
- Code optimization: no need to write a lot of code
- Code is easier to read
- Program testing becomes easier
- Compiled executable is smaller
- You don't need to make comments because function name make sense
- Program can be developed in short period of time
- There is no chance of code duplication
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