搜索 - 科创

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使用嵌套的if块会嵌套过深以至于难以整理使用平行的if块对C++/C99变量初始化不友好，【C++/C99变量初始化也是有效代码】，放if块里边限制生存期，放if块外面不受if块控制使用【if (失败

include <delay.h> #include <stdio.h> #include <stdlib.h> #include <math.h> #include <twi.h> /* 从WINAVR目录C:</twi.h></math.h></stdlib.h></stdio.h></delay.h>