Question

How to find the length (size) of an int array in C++

Answer 1

#include <iostream>

using namespace std;

int main()
{
	int arr[] = { 4, 2, 7, 1, 9, 2, 8 };

	int size = sizeof(arr) / sizeof(arr[0]);

	cout << "size = " << size << endl;
		
	return 0;
}


/*
run:

size = 7

*/

 

70+ SQL courses for beginners and professionals

Answer 2

#include <iostream>

using namespace std;

int main()
{
	int arr[] = { 4, 2, 7, 1, 9, 2, 8 };

	int size = sizeof(arr) / sizeof(*arr);

	cout << "size = " << size << endl;
		
	return 0;
}


/*
run:

size = 7

*/

 

70+ SQL courses for beginners and professionals