If there is an value in a array, and the same value comes at the same spot, does it cancel each other out or does it reassing the value?

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.

b. xor is the correct answer