Difference between Array and Pointer (Full Details)

A close connection exists between an array and a pointer. The main difference between an array and a pointer is that an array is a group of variables that all have the same type of data. The pointer, on the other hand, is a variable that stores the address of another variable. The pointer can be used to get to the elements of an array. Using pointer arithmetic to get to the whole array is faster.

There are many different ways to write code in the world. Most of the time, each programming language has its own ideas that make it hard to learn.

In many programming languages, arrays and pointers are both common ideas. Even though array and pointer are close to each other, that doesn’t mean they are the same.

So, what is the main difference between an array and a pointer? The first one is a data structure that stores a group of elements with the same data type. The second one is a variable that stores the address of another variable in the computer’s memory.

This article has a table that shows more differences between an array and a pointer. Read about the similarities between array and point to get a better idea of what they are.

Array vs Pointer String TGB

What is an Array?

The array is a type of data structure that holds numbers that are always the same type. All of the elements in the array are thought to be in the same memory location.

If you want to access a specific array element, you will need to access a specific index of that array element in their location.

The good news is that arrays usually come in three different types: one-dimensional, two-dimensional, and multidimensional.

Most of the time, an array index starts at zero and goes up to the size of the array minus one. Here is a programming demonstration for proper understanding:  type array_name[array_size ];

What is Pointer?

A variable that stores the address of another variable is called a “pointer.” If the memory is given to a variable, the pointer can help find the memory’s address in the variable.

Most of the time, programmers use a unary operator to help them declare a pointer variable. Here is a syntax pointer declaration example: datatype *variable_name;

Datatype shows what kind of data the variable holds, while variable name shows the name given by the user.

Key Differences Between Array and Pointer

  • Java can work with the array, but it can’t work with pointers at all.
  • Pointer can only hold the address of one variable at a time, but array can hold any number of variables.
  • Arrays with variable pointers can be made in an array, and array points are made with the help of pointers.
  • Array stores variables with the same type of data, while the address of a variable with the same type as the pointer variable is stored in the pointer variable.
  • Pointer is a variable that points to another memory address, while an array is a group of data elements.
  • Most of the time, the array is used to allocate a fixed amount of memory, while the pointer is used to allocate memory on the fly.
  • The syntax for an array is array name[array size], while the syntax for a pointer is datatype*variable name.
  • Arrays store the number of elements in terms of the array size, while pointers tend to point to the location of the variable in other memory addresses.

Conclusion

A pointer is used for programming, while an array lets us work on elements that have the same data type without having to do each one separately.

Research has shown that pointer often gives wrong values, even though it is a very powerful tool for finding the address of variables.

I hope that the main differences between an array and a pointer were helpful. Please share your thoughts in the comments section.

Conclusion

A pointer is used for programming, while an array lets us work on elements that have the same data type without having to do each one separately.

Research has shown that pointer often gives wrong values, even though it is a very powerful tool for finding the address of variables.

I hope that the main differences between an array and a pointer were helpful. Please share your thoughts in the comments section.