编写将单片机片内一组RAM单元清0的函数，函数内不包括这组RAM单元的起始地址和单元个数，起始地址和单元个数参数应在执行函数前由主函数赋值。程序如下：#define uchar unsigned charvoid clear0(uchar *addr, uchar lenth){ uchar i;for(i=0; i< ;i++){*addr=0;addr;}}void main(void){uchar addr[32] _at_ 0x30;起始地址赋值uchar lenth=32;单元个数赋值clear0( , );while(1);}