Arrays in C Programming for Beginners with Examples

Arrays in C Programming

An array in C programming is used to store multiple values of the same data type in a single variable. Instead of creating many separate variables, arrays help organize data efficiently.

What is an Array?

An array is a collection of elements stored in continuous memory locations. Each element is accessed using an index number.

Index in C starts from 0.

Declaration of an Array

Syntax:


data_type array_name[size];

Example:


int numbers[5];
This declares an integer array that can store 5 values.

Initialization of an Array


int numbers[5] = {10, 20, 30, 40, 50};
Here: - numbers[0] = 10 - numbers[1] = 20 - numbers[2] = 30 - numbers[3] = 40 - numbers[4] = 50

Accessing Array Elements


#include <stdio.h>

int main() {

    int numbers[3] = {5, 10, 15};

    printf("%d\n", numbers[0]);

    printf("%d\n", numbers[1]);

    printf("%d\n", numbers[2]);

    return 0;

}
This program prints all array elements.

Why Arrays Are Important

  • Store multiple values efficiently
  • Reduce number of variables
  • Used in sorting and searching programs
  • Essential for advanced data structures

Conclusion

Arrays help manage multiple values using a single variable. Understanding arrays is important before learning strings and functions in C.

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