13.9 Write an aligned malloc and free function that supports allocating memory such that the memory address returned is divisible by a specific power of two. EXAMPLE align_malloc (1000,128) will return a memory address that is a multiple of 128 and t
// 动态申请内存, 指向一个未初始化的整型 int *pi = new int; // pi指向一个整型值,初始化为0 int *pi = new int(); // value of i is 1024 int i(1024); // pi指向1024 int *pi = new int(1024); // value of s is "99999" string s(5, '9'); // *ps is "999999" string *ps = new s
首先安装Unit Test Generator.方法为:工具->扩展和更新->联机->搜索“图标为装有蓝色液体的小试管.Unit Test Generator”, 编写代码,生成一个新的类,编写构造函数 与 add()函数.代码如下. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Co
总结 对于指针数组的理解:按照字面意思,首先是指针,其次是数组,就表明这是一个数组,不过数组里面存储的指针.``` // 使用指针数组 int **ptr = new int*[4]; for(int i = 0; i < 4; ++i) { *(ptr+i) = new int [3]; }```如代码所示:new int * [4],表明这是一个数组,数组里面存储的是 int *类型的指针.而等号左值 int ** ptr,首先要看(int *)*ptr ,表明这一个指针,其指向了int *
处理中间键报DBNULL的错误 [ PATIENT_ID = 2889706, PATIENT_NUM = 29275, TIMES = 1 ] Object cannot be cast from DBNull to other types. at System.DBNull.System.IConvertible.ToDateTime(IFormatProvider provider) at System.Convert.ToDateTime(Object value) at S