以下代码中单引号和双引号之间有什么区别：
unsigned char name='1';
unsigned char name1="1";
printf("name in hex name=%x, name1=%x\n",name,name1);
printf("name in ascii name=%d, name1=%d\n",name,name1);
输出如下：
name in hex name=31, name1=18
name in ascii name=49 name1=24