Difference between i++ and ++i

Most programmers become confused regarding the difference between i++ and ++i. Please see the example to clear your conception. 

i = 5;
j = ++i;
Answer: i=5, j=6 (So ++i increase value of i and return incremented value)

i = 5;
j = i++;
k = i;
Answer: i=5, j=5, k= 6 (i++ increase value of i. But did not return incremented value. But incremented value will be received from next line of code)