问题描述
有没有任何C编译器将默认类型的char作为unsigned，除非用户在文件或项目设置中明确提到。
Is there any C compiler which takes the default type of char as unsigned unless explicitly mentioned by the user in the file or project settings?
/ Kanu _
推荐答案
GCC。但是只有当编译一个unsigned char是约定的平台时，包括ARM linux [*]。当GCC为x86编译时，默认是为char进行签名。
GCC does. But only when compiling for platforms where an unsigned char is the convention, including ARM linux[*]. When GCC compiles for x86, the default is for char to be signed.
[*]或者至少它是过去的。对于所有我知道linux已经从ARM切换到不同的默认ABI。
[*] Or at least it has been in the past. For all I know linux has switched to a different default ABI on ARM since.
更新2013年： ARM编译器（gcc，clang） Android NDK默认为 unsigned char 。 x86和MIPS编译器默认为 signed char 。
Update '2013: ARM compilers (gcc, clang) for Android NDK default to unsigned char. The x86 and MIPS compilers default to signed char.
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