```plain
main.cpp: In function 'int km()':
main.cpp:70:1: warning: no return statement in function returning non-void [-Wreturn-type]
70 | }
| ^
main.cpp: In function 'bool dfs(int)':
main.cpp:35:1: warning: control reaches end of non-void function [-Wreturn-type]
35 | }
| ^
```
by ud2_ @ 2022-10-10 15:30:05
@[ud2_](/user/206953) 啥意思??
菜鸡看不懂……
by Joseph_H @ 2022-10-10 15:38:20
@[Joseph_H](/user/568775) 这些是[在 `-Wall` 选项下](/blog/_post/312545)编译器报的错,意思是函数末尾缺了 `return`。
by ud2_ @ 2022-10-10 16:00:16
@[ud2_](/user/206953) 有没有一种情况,你的函数没有返回值
by WaterSun @ 2022-10-10 16:06:05
okok
现在研究如何不T了……
by Joseph_H @ 2022-10-10 18:07:46