How to check if an Array is Not Empty in C++ - Step by Step Examples

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

Answer

In C++, you can use the size function or the size() method 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 using the size function or the size() method of the array and comparing it with 0, and store the result in the variable notEmpty.
Finally, we print whether the array is not empty or not.

C++ Program

#include <iostream>
#include <array>
int main() {
    std::array<int, 3> numbers = {1, 2, 3};
    bool notEmpty = !numbers.empty();
    std::cout << "Array is not empty: " << std::boolalpha << notEmpty << std::endl;
    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 using the size function or the size() method of the array and comparing it with 0, and store the result in the variable notEmpty.
Finally, we print whether the array is not empty or not.

C++ Program

#include <iostream>
#include <array>
int main() {
    std::array<int, 0> emptyArray;
    bool notEmpty = !emptyArray.empty();
    std::cout << "Array is not empty: " << std::boolalpha << notEmpty << std::endl;
    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++ - Step by Step Examples

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