Recent questions tagged 字符型数据0x80强转成unsigned

Question

    #include <stdio.h> int main(int argc, char *argv[]) { printf("%x ", (unsigned int)(unsigned char)0x80); printf("%x ", (unsigned int)(signed ... 型，为什么符号位也跟着扩展了？ P.S. C/C++中输出结果一致...