發現自己很容易搞混這兩個，於是簡單做個筆記記錄～

i++ 與 ++i

• i++: post-increment

  在這一行程式完成之後，再進行+1的動作
  

• ++i: pre-increment

  先進行+1，再進行後面的動作
  

Example

int x;
int y;

// Pre-increment
//   x is incremented by 1, then y is assigned the value of x
x = 1;
y = ++x; // x is now 2, y is also 2

// Post-increment
//   y is assigned the value of x, then x is incremented by 1
x = 1;
y = x++; // x is now 2, y is also 1