How to Loop through an Array in C

The benefits of arrays is that they can hold many different elements in a single variable.

To access all the elements, you'll need to iterate, or loop, through the array, gaining access to each element one by one.

In this post, we'll learn how to create an array and how to loop through it.

Looping through an array

Let's start with an example array:

CLIKE
const int length = 10;

int array[length] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

In our example, we first defined how big the array is going to be in the length variable.

This is useful because in C, the length of the variable is not automatically kept track of for you like in other languages.

With that length, we then created an int array with the same length, and populated it with the values 1 through 10.

Now let's try iterating over this array and print out each element:

CLIKE
const int length = 10;

int array[length] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

for (int i = 0; i < length; i++) {
    printf("%d\n", array[i]);
}

BASH
1
2
3
4
5
6
7
8
9
10

Conclusion

In this post, we created an int array and iterated over it to print each element on a new line.

Thanks for reading and happy coding!

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