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 use the size function from the array library.

✐ Examples

1 Length of Integer Array

In this example,

We include the header file for array operations.
We create an integer array named numbers with some values.
We use the size function to get the length of the array and store the returned value in length variable.
Finally, we shall print the value in length to standard output.

C++ Program

#include <iostream>
#include <array>
int main() {
    std::array<int, 5> numbers = {1, 2, 3, 4, 5};
    int length = numbers.size();
    std::cout << "Length of array is: " << length;
    return 0;
}

Output

Length of array is: 5

2 Length of String Array

In this example,

We include the header file for array operations.
We create a string array named names with some strings.
We use the size function to get the length of the array and store the returned value in length variable.
Finally, we shall print the value in length to standard output.

C++ Program

#include <iostream>
#include <array>
#include <string>
int main() {
    std::array<std::string, 3> names = {"Alice", "Bob", "Charlie"};
    int length = names.size();
    std::cout << "Length of array is: " << length;
    return 0;
}

Output

Length of array is: 3

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 String Array

C++ Program

Output

Summary

More C++ Arrays Tutorials