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// 请编程， 定义char类型的变量n，初始化值为-128, 将n值减1之后，再输出它的十六进制数值和十进制数值
#include <stdio.h>
int main()
{
char n = -128;
n -= 1;
printf("十六进制数值为: 0x%hhx\n", n);
printf("十进制数值为: %d\n", n);
return 0;
}