代码

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

评测结果