Commenting. When someone comments of a blog the blog's writer can comment back, to answer questions, etc.
It means multiplying or dividing by 10, 100, 1000, etc
Explanation:
In simple English, an array is a collection.
In C also, it is a collection of similar type of data which can be either of int, float, double, char (String), etc. All the data types must be same. For example, we can't have an array in which some of the data are integer and some are float.
