how do i read a unknown size array?i had read i few example from this forum but still dont understandCode:#include<stdio.h> main(void) { int days = 0,count; float x[unknown size], average, sum; printf("how many days?"); scanf("%d", &days); for ( count = 0; count < days; count++) { sum = 0; printf("\n Day %d \n how many amount?", count + 1); scanf("%f", &x[count]); sum += x[count]; } average = sum/days; printf("\n the average sales is %f", average); return 0; }