代码

void my_memset(char *a, char c, unsigned n) {
	for(register unsigned i = 0; i+7 < n; i+=8){
		a[i]=c;
a[i+1]=c;
a[i+2]=c;
a[i+3]=c;
a[i+4]=c;
a[i+5]=c;
a[i+6]=c;
a[i+7]=c;
}
        for(register unsigned i = (n/8)*8;i<n;++i)a[i]=c;
}

评测结果