在linux下进行c语言编写，可以对warning 进行分级设置吗?

例如，定义某个变量不使用算是一级； 例如，memcpy（a,b,len），a，b是结构体，len计算长度错误的警告算是一种， 可以这样设置吗？

可以的下面这些参数就是控制gcc的警告级别的：
-Wall turns on the following warning flags:

-Waddress
-Warray-bounds (only with-O2)
-Wc++11-compat
-Wchar-subscripts
-Wenum-compare (in C/ObjC; this is on by default in C++)
-Wimplicit-int (C and Objective-C only)
-Wimplicit-function-declaration (C and Objective-C only)
-Wcomment
-Wformat
-Wmain (only for C/ObjC and unless-ffreestanding)
-Wmaybe-uninitialized
-Wmissing-braces (only for C/ObjC)
-Wnonnull
-Wparentheses
-Wpointer-sign
-Wreorder
-Wreturn-type
-Wsequence-point
-Wsign-compare (only in C++)
-Wstrict-aliasing
-Wstrict-overflow=1
-Wswitch
-Wtrigraphs
-Wuninitialized
-Wunknown-pragmas
-Wunused-function
-Wunused-label
-Wunused-value
-Wunused-variable
-Wvolatile-register-

#include #include #include int main() { while (1) { char timebuf[100]; time_t t; time (&t); strftime(timebuf, sizeof(timebuf), "%y nian %m yue %d ri %h:%m:%s", localtime(&t)); printf ("%s\r", timebuf); fflush(stdout); sleep(1); } return 0; }