In the first code, you are passing the address of the array pointing to the top element in the array. So, when you modify the value in the function and return to the main function you are still accessing the same array which is in the same address. This is called pass by reference.

Oct 19, 2023 · Passing by reference is a technique for passing parameters to a function. It is also known as call by reference, call by pointers, and pass by pointers. In this article, we will discuss this technique and how to implement it in our C program.

Mar 7, 2025 · Passing an array to a function allows the function to directly access and modify the original array. In this article, we will learn how to pass arrays to functions in C. In C, arrays are always passed to function as pointers.

Sep 24, 2017 · In this guide, we will learn how to pass the array to a function using call by value and call by reference methods. To understand this guide, you should have the knowledge of following C Programming topics: C – Array; Function call by value in C; Function call by reference in C; Passing array to function using call by value method

In this tutorial, you'll learn to pass arrays (both one-dimensional and two-dimensional arrays) to a function in C programming with the help of examples.

In this tutorial, we explored different ways to pass arrays to functions in C: Passing a 1D array to print its elements. Modifying an array inside a function. Passing a 2D array to a function. Understanding how to pass arrays to functions helps in creating reusable and efficient code.

If you want to pass an array to a function, you can use either call by value or call by reference method. In call by value method, the argument to the function should be an initialized array, or an array of fixed size equal to the size of the array to be passed.

Jan 5, 2014 · How can I pass an array of structs by reference in C? As an example: int X; int Y; //Do Something with the array. Coordinate Coordinates[10]; SomeMethod(&Coordinates); In C arrays are passed as a pointer to the first element. They are the only element that is not really passed by value (the pointer is passed by value, but the array is not copied).

Nov 8, 2017 · It's a syntax for array references - you need to use (&array) to clarify to the compiler that you want a reference to an array, rather than the (invalid) array of references int & array[100];. EDIT: Some clarification.

Oct 31, 2024 · Let’s explore the three main methods for declaring array parameters in C functions: 1. Using Square Bracket Notation. 2. Using Pointer Notation. 3. Using Fixed-Size Arrays. Here’s a practical example demonstrating all three methods: