Implicit declaration of function 'ether_ntoa' is invalid in C99 2015-01-10 09:41 −报错代码: strcpy(temp, (char *)ether_ntoa(LLADDR(sdl))); 解决方法: 导入这三个头文件即可, #include <sys/types.h> #include <sys/socket.h> #include <net/... ...
warning: incompatible implicit declaration of built-in function 'exit' 2008-06-11 11:09 −尝试编译如下代码: #include <stdio.h> int main(void) { int i = -10; if (i < 0) { exit(1); } return 0; } 编译信息如下: $ gcc demo.c... ...