Array in C language

In C programming, an array is a collection of elements of the same data type stored in contiguous memory locations. Arrays provide a way to store multiple values of the same type under a single name and are widely used to work with lists, matrices, strings, and other data structures. The elements in an array can be accessed using their index, which starts from 0 and goes up to the size of the array minus one.

The syntax to declare an array in C is as follows:

data_type array_name[size];

Here, 'data_type' represents the type of elements in the array, 'array_name' is the name of the array, and 'size' is the number of elements the array can hold.

Here's an example of declaring and using an array in C:

                
                    #include <stdio.h>
                    int main() { 
                        (  Declaration of an integer array of size 5 )
                        int numbers[5]; 
        
                        ( Initialization of array elements )
                        numbers[0] = 10; 
                        numbers[1] = 20; 
                        numbers[2] = 30; 
                        numbers[3] = 40; 
                        numbers[4] = 50; 
        
                        ( Accessing and printing array elements using a loop )
                        for (int i = 0; i < 5; i++) { 
                            printf("Element at index %d: %d\n", i, numbers[i]); 
                            } 
                            return 0; 
                        }
                        output :
                        Element at index 0: 10 
                        Element at index 1: 20 
                        Element at index 2: 30 
                        Element at index 3: 40 
                        Element at index 4: 50 

                
            

Output:

In this example, we declared an integer array called 'numbers' with a size of 5. Then, we initialized each element with different values and used a 'for' loop to access and print each element in the array.

It's important to note that arrays in C have fixed sizes determined at the time of declaration. Once the size is defined, it cannot be changed during program execution. C also supports multidimensional arrays, which are arrays of arrays and can be used to represent matrices and other complex data structures.