Can someone please narrate this code for me? I do not understand why we create:
1. void testfunc (int a[]) before main()
2. testfunc ( a) - in main()
3. void testfunc again after main.
can someone please explain the purpose of these? Thank you
Code:void testfunc (int a[]); void main() { int ctr, a[5] = {1,3,5,7,11}; testfunc(a); for (ctr = 0; ctr < 5; ctr = ctr + 1) { printf("%d\n", a[ctr]); } } void testfunc ( int a[] ) { int n; for(n = 0; n < 5; n = n + 1) { a[n] = a[n] * a[n]; } }