Can you explain what happens in postfix increment operations?

Postfix increment (i++) first returns the current value of the variable, then increases it by 1.

This means that if you use an expression with postfix increment, the old value is taken first, and then the variable is increased.

Example:

int i = 5;
int a = i++; // a will get 5, i will become 6

Unlike prefix increment (++i), which first increases the value and then returns it.

Thus, postfix increment is useful when you need to use the current value and then increase the variable.