19 lines
264 B
Markdown
19 lines
264 B
Markdown
# RectInt::GetBottom
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```cpp
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int32_t GetBottom() const
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```
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获取矩形下边界。
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**返回：** `int32_t` - 下边界坐标 (y + height)
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**复杂度：** O(1)
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**示例：**
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```cpp
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RectInt rect(10, 20, 100, 50);
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int32_t bottom = rect.GetBottom(); // 70
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```
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