How can I find the size of the array without count it?

Question

https://code.sololearn.com/c3hm76wtanP9/?ref=app

Answer 1

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

Answer 2

https://www.sololearn.com/learn/CPlusPlus/1633/

Answer 3

Thanks Jayakrishna🇮🇳 Kevin ★