字符变量写入二进制码

#include<iostream>
int main()
{
    char c1='\376';//-2
    //写进去的是11111110
    unsigned char c2='\376';//254
    short i1=c1,i2=c2;
    std::cout<<i1<<" "<<i2<<std::endl;
    return 0;
}