C Tutorials

How to check if an Array is Not Empty in C

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How to check if an Array is Not Empty in C ?

Answer

In C, you can use the sizeof operator to check if an array is not empty.

✐ Examples

1 Check if Given Array with Elements is Not Empty

In this example,

We create an array named numbers with some elements.
We check if the array is not empty by comparing the size of the array in bytes using sizeof and dividing it by the size of an array element, and store the result in the variable notEmpty.
Finally, we print whether the array is not empty or not.

C Program

#include <stdio.h>
int main() {
    int numbers[] = {1, 2, 3};
    int notEmpty = sizeof(numbers) / sizeof(numbers[0]);
    printf("Array is not empty: %s\n", notEmpty ? "true" : "false");
    return 0;
}

Output

Array is not empty: true

2 Check if Empty Array is Not Empty

In this example,

We create an empty array named emptyArray.
We check if the array is not empty by comparing the size of the array in bytes using sizeof and dividing it by the size of an array element, and store the result in the variable notEmpty.
Finally, we print whether the array is not empty or not.

C Program

#include <stdio.h>
int main() {
    int emptyArray[] = {};
    int notEmpty = sizeof(emptyArray) / sizeof(emptyArray[0]);
    printf("Array is not empty: %s\n", notEmpty ? "true" : "false");
    return 0;
}

Output

Array is not empty: false

Summary

In this tutorial, we learned How to check if an Array is Not Empty in C language with well detailed examples.

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How to check if an Array is Not Empty in C

How to check if an Array is Not Empty in C ?

Answer

✐ Examples

1 Check if Given Array with Elements is Not Empty

C Program

Output

2 Check if Empty Array is Not Empty

C Program

Output

Summary

More C Arrays Tutorials