2:31:13 in this webinar

#1

pls explain the logic in that time or explain line 9 and 12

#2

by sizeof(int) we are getting the size of int data type, which is 4 bytes. By sizeof(a) we are getting the size of array a which is 7*4, because it has 7 integers of 4 bytes each. So, by that logic, in line number 9 int n = sizeof(a)/sizeof(int); we are storing the length of array in the variable n.
And in line number 12, we the sorting the array a using an inbuilt sort function.