Are arrays a first class data structure in C & C++?

While arrays have type (and are an example of container data structure), it is perhaps useful to understand that in C and C++, unlike fundamental types, and class / struct / union types they are not treated as first-class data types in that they cannot be passed as parameters by-value, returned by-value, or assigned to or from.

What is an array in C++?

In C++, an array is a variable that can store multiple values of the same type. For example, Suppose a class has 27 students, and we need to store the grades of all of them. Instead of creating 27 separate variables, we can simply create an array: Here, grade is an array that can hold a maximum of 27 elements of double type.

How many variables can a C++ array hold?

Instead of creating 27 separate variables, we can simply create an array: Here, grade is an array that can hold a maximum of 27 elements of double type. In C++, the size and type of arrays cannot be changed after its declaration. In C++, each element in an array is associated with a number. The number is known as an array index.

How to create an array with elements of different types in C++?

Again it lets me create an array with elements of different types, not of types themselves. The convenient built-in array of types in C++ is std::tuple. To access the ith type in a std::tuple, use std::tuple_element_t.