How to check if an Array is Empty in C - Step by Step Examples

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How to check if an Array is Empty in C ?

Answer

In C, you can check if an array is empty by comparing its length or size with 0.

✐ Examples

1 Check if Given Array with Elements is Empty

In this example,

We create an array named numbers with some elements.
We check if the array is empty by comparing its size with 0 and store the result in the variable isEmpty.
Finally, we print whether the array is empty or not.

C Program

#include <stdio.h>
int main() {
    int numbers[] = {1, 2, 3};
    int size = sizeof(numbers) / sizeof(numbers[0]);
    int isEmpty = size == 0;
    printf("Array is empty: %s\n", isEmpty ? "true" : "false");
    return 0;
}

Output

Array is empty: false

2 Check if Array with no Elements is Empty

In this example,

We create an empty array named emptyArray.
We check if the array is empty by comparing its size with 0 and store the result in the variable isEmpty.
Finally, we print whether the array is empty or not.

C Program

#include <stdio.h>
int main() {
    int emptyArray[0];
    int size = sizeof(emptyArray) / sizeof(emptyArray[0]);
    int isEmpty = size == 0;
    printf("Array is empty: %s\n", isEmpty ? "true" : "false");
    return 0;
}

Output

Array is empty: true

Summary

In this tutorial, we learned How to check if an Array is Empty in C language with well detailed examples.

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