C is middle level and general purpose language which supports both high level(PASCAL,COBOL,FORTRAN) and low level languages(ASSEMBLY LEVEL) ,by using this we can develop system level softwares,compilers,Operating systems, video games, device drivers programming,graphics designing etc.,it can can act as mediator for high level languages which interact directly with hardware.C contains rich set of operators.Its having 32 keywords which convey certain meaning in the computer.By using these keywords we can develop programs.C is a general purpose language it can be used any where .

Advantages:

* Portability
* Reliability
* Security
* Speed
* High efficiency
* Reusability

Software is collection of programs,by using this we can develop application programs that is system level programs,general applications ,games,web designing,all of this applications will be developed by using a software that is collection of programs.software is mediator in between user and hardware.by using this we can develop applications like bank database, video games,graphics,media players,compilers,operating systems. so software makes a major role in developing applications.