Why isn't the size of an array parameter the same as within main?

Question

Why isn\'t the size of an array sent as a parameter the same as within main?

#include 

void PrintSize(int p_someArray[10]);

int main () {
           


        

Answer 1

In C language when you pass the array as an argument to the function , it is automatically converted into pointer ,array passing from one function other function is know as call by reference . That is the reason the called function only receives the pointer which point to the first element of function This is the reason

fun(int a[]) is similar to fun(int *a) ;

so when you print the size of array it will print the size of first element.