They both increment the number. `++i` is equivalent to `i = i + 1`.
`i++` and `++i` are very similar but not exactly the same. Both increment the number, but `++i` increments the number before the current expression is evaluated, whereas `i++` increments the number after the expression is evaluated.
Example:
int i = 1; int x = i++; //x is 1, i is 2 int y = ++i; //y is 3, i is 3

They both increment the number. `++i` is equivalent to `i = i + 1`.
`i++` and `++i` are very similar but not exactly the same. Both increment the number, but `++i` increments the number before the current expression is evaluted, whereas `i++` increments the number after the expression is evaluated.
int i = 3; int a = i++; // a = 3, i = 4 int b = ++a; // b = 4, a = 4