What is data structure?

Remember one thing data structure and algorithms using c language is not a language, a data structure is a concept set of algorithms used to structure the data, it is not a programming language such as like C, C++, Java, so there are just a set of algorithms, we are executing these algorithms using any programming language.
The data structure means it is the collection of some data or elements and all possible operations which are required for those set of elements. For example: consider an array, where the set of elements is required to store in an array. Various operations such as inserting and deleting can be performed.