A struct or class is a user-defined type. Think of it like any other type, such as char or int or double.
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struct Mystruct {
// etc.
};
class Myclass {
// etc.
};
int array1[10]; // array of 10 integers
Mystruct array2[10]; // array of 10 Mystructs
Myclass array3[10]; // array of 10 Myclasses