So i need help understanding some stuff for my principles of programming class   Can someone answer these using simple answers and examples?   1) What are primitive data types? what do they look like?   2) Are numerical data types a TYPE of primitive data type? yes or no?   3) What do associative arrays look like?

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Concept of Pointer Parameter

Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.