Can someone explain the outputs

Question

#include<stdio.h>
int main()
{
int n=2,m=3;
while(m--)
n*=n;
printf("%d",n);
}
Output is 256

Answer 1

let n = 2 and m = 3

*** Begin loop

m-- // m = 3 (true)
n *= n // n = 2 * 2 => 4

m-- // m = 2 (true)
n *= n // n = 4 * 4 => 16

m-- // m = 1 (true)
n *= n // n = 16 * 16 => 256

m-- // m = 0 (false)

*** End loop