Array in C

Array in C

An array in C is a collection of elements of the same data type that are stored in contiguous memory locations. Each element can be accessed using an index. Here are the key steps involved in working with arrays in C:

  1. Declaration and Initialization:
  2. Arrays in C are declared using the following syntax: c data_type array_name[array_size];
  3. Here, data_type specifies the type of elements the array will hold, array_name is the identifier for the array, and array_size indicates the number of elements in the array.

  4. Arrays can be initialized at the time of declaration or later using a loop or by assigning values to individual elements.

  5. Accessing Elements:

  6. Elements in an array are accessed using their index. The index of the first element is 0, and the index of the last element is array_size - 1.

  7. The syntax for accessing an element in an array is: c array_name[index];

  8. Example:

  9. Here's an example of declaring, initializing, and accessing elements in an array in C: ```c #include

    int main() { int numbers[5] = {1, 2, 3, 4, 5}; // Declaration and initialization printf("%d", numbers[2]); // Accessing the third element return 0; } ```

  10. Manipulating Array Elements:

  11. Array elements can be modified by assigning new values to them using their indices.

  12. Arrays can be passed to functions, and their elements can be modified within the function.

  13. Array Size:

  14. The size of an array in C is fixed at the time of declaration and cannot be changed during program execution.

  15. Multi-dimensional Arrays:

  16. C also supports multi-dimensional arrays, which are arrays of arrays. They are declared using the following syntax: c data_type array_name[row_size][column_size];

  17. Memory Allocation:

  18. Arrays in C are allocated contiguous memory locations, which allows for efficient memory access and manipulation.

These are the fundamental aspects of working with arrays in the C programming language. Arrays are widely used for storing and manipulating collections of data in C programs.

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