变量的类型自动转换

"a != ~b"

#include <stdio.h>


int main(int argc, char *argv[])
{
    unsigned char a =0;
    unsigned char b =0xFF;
    
    if(a == ~b)
    {
        printf("a == ~b
");
    }
    else
    {
        printf("a != ~b
");
    }
    
    printf("~b=%#X
", ~b);
}