Find array length sizeof

When an array is passed as a parameter, it degrades into a pointer and requires the length of the array to be evaluated inside the main function.

 #define  _CRT_SECURE_NO_WARNINGS 1#include <stdio.h> Void fun (Int arr[], int len) {    printf ("---%d\n",  sizeof (arr)); &NBSP;&NBSP;&NBSP;&NBSP;PRINTF ("---%d\n",  sizeof (Arr[0])); &NBSP;&NBSP;&NBSP;&NBSP;PRINTF ("---len =  %d\n ",  sizeof (arr)  / sizeof (arr[0]);      printf (" ____len=%d\n ",  len);} Int main () {    int arr[10];    printf ("%d\n",  sizeof ( ARR));     printf ("%d\n",  sizeof (Arr[0]));     printf ("len =  %d\n ",  sizeof (arr)  / sizeof (arr[0]);     fun (arr, sizeof (arr)  / sizeof (arr[0]));     system ("pause");     return 0;} 

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>650 "this.width=650;" src= "http ://s2.51cto.com/wyfs02/m02/75/e8/wkiom1zeycrsi4smaabawfve_ok248.png "title=" 360 feedback 16400228526034.png "alt=" Wkiom1zeycrsi4smaabawfve_ok248.png "/>

sizeof (ARR)//Calculate the memory size of the array
sizeof (arr[])//Find the byte of array element
sizeof (ARR)/sizeof (Arr[0]//Find array length or number of elements

From the above example, it can be seen that the length of the array is not within the function

Find array length sizeof