++a and a++ these two operators are different. The first one changes the value of a and returns the value. The second one saves the initial value, then increments the value of a and then returns the initial value. So if you just use them for incrementing the value, there would be no difference, as both of the operators do the same in terms of adding 1 to the value, but if you want to use the result of the expression right away you’ll get different results.