C Quiz - 108 | Question 5

In a C file (say sourcefile1.c), an array is defined as follows. Here, we don’t need to mention array arr size explicitly in [] because the size would be determined by the number of elements used in the initialization. C

int arr[] = {1,2,3,4,5};

In another C file (say sourcefile2.c), the same array is declared for usage as follows: C

extern int arr[];

In sourcefile2.c, we can use sizeof() on arr to find out the actual size of arr.