How to Get Array Length in C - Step by Step Examples

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How to Get Array Length in C ?

Answer

To get the length of an array in C, you can divide the size of the entire array by the size of one element.

✐ Examples

1 Length of Integer Array

In this example,

We create an integer array named numbers with some values.
We calculate the length of the array by dividing the size of the entire array by the size of one integer element, and store the result in length variable.
Finally, we shall print the value in length to standard output.

C Program

#include <stdio.h>
int main() {
    int numbers[] = {1, 2, 3, 4, 5};
    int length = sizeof(numbers) / sizeof(numbers[0]);
    printf("Length of array is: %d", length);
    return 0;
}

Output

Length of array is: 5

2 Length of Character Array

In this example,

We create a character array named letters with some characters.
We calculate the length of the array by dividing the size of the entire array by the size of one character element, and store the result in length variable.
Finally, we shall print the value in length to standard output.

C Program

#include <stdio.h>
int main() {
    char letters[] = {'a', 'b', 'c', 'd', 'e'};
    int length = sizeof(letters) / sizeof(letters[0]);
    printf("Length of array is: %d", length);
    return 0;
}

Output

Length of array is: 5

Summary

In this tutorial, we learned How to Get Array Length in C language with well detailed examples.

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How to Get Array Length in C - Step by Step Examples

How to Get Array Length in C ?

Answer

✐ Examples

1 Length of Integer Array

C Program

Output

2 Length of Character Array

C Program

Output

Summary

More C Arrays Tutorials