#include <stdio.h> int main() { int arr[] = {1, 2, 3, 4, 5}; printf("Length of an array is %ld \n", (sizeof(arr) / sizeof(int))); return 0; }
kodingwindow@kw:~$ gcc kw.ckodingwindow@kw:~$ ./a.out Length of an array is 5 kodingwindow@kw:~$