Question

how to check the size of array

Answer 1

What language are you after?

You can use the sizeof() function in C/C++:

#include <stdio.h>

int main()
{
    int array[32];
    printf("Size of array: %lu\n", sizeof(array));
    printf("Element count in array: %lu\n", sizeof(array) / sizeof(array[0]));
    return 0;
}

In other object-oriented languages, such as Java, C#, you typically have a Length or Count property on collections.

Comments

On python there is a length function:

x = (1, 2, 3, 4, 5)

print(len(x))

Answer 2

using this Method in Swift

var a = [4,53,45,32,67]

print(a.count)