# 第一週筆記
## 函式:
print()

## 運算子:

### 算術運算子Arithmetic Operators:

| Operator | Name | Example |
|:--------:|:----------------------:|:----------:|
| + | Addition加號 | 1 + 1 = 2 |
| - | Subtraction減號 | 1 - 1 = 0 |
| * | Multiplication乘號 | 2 * 2 = 4 |
| / | Division除號 | 2 / 2 = 1 |
| // | Floor division整數相除 | 7 // 2 = 3 |
| % | Modulus取餘數 | 7 % 2 = 1 |
| ** | Exponentiation取指數 | 2 ** 3 = 8 |

### 關係運算子Comparison Operators:

| Operator | Name | Example |
|:--------:|:--------------------------------:|:-------:|
| < | Less than小於 | 1 < 2 |
| > | Greater than大於 | 2 > 1 |
| <= | Less than or equal to小於等於 | 1 <= 2 |
| >= | Greater than or equal to大於等於 | 2 >= 1 |
| == | Equal相等 | 1 == 1 |
| != | Not equal不相等 | 1 != 2 |

### 指派運算子Assignment Operators:

| Operator | Name | Example |
|:--------:|:----------------:|:--------------:|
| = | 指派 | x = 7 |
| += | 相加同時指派 | x += 1 = 8 |
| -= | 相減同時指派 | x -= 1 = 6 |
| * = | 相乘同時指派 | x * = 2 = 14 |
| /= | 相除同時指派 | x /= 7 = 1 |
| //= | 整數相除同時指派 | x //= 2 = 3 |
| %= | 取餘數同時指派 | x %= 2 = 1 |
| * * = | 取指數同時指派 | x * * = 2 = 49 |

### BMI計算=(體重kg/身高m^2)
x = (體重參數kg)
y = (身高參數m)
BMI = x/y ** 2