读取map的值

111111111111111111111111 id

struct structdata

{

int id;

long context;

}

map httpnodeobj; //读取文件内容时存入map的值，下面对这个httpnodeobj进行操作

map valueobj;

void readdata()

{

map::iterator it;

for(it = httpnodeobj.begin(); it != httpnode.end();++it)

{

httpnode* pdata = it->second;

id = pdata->id;

map::iterator itr= valueobj.find(id)

if(itr != valudeobj.end())

{

structdata *ptemp = itr->second;

ptemp->context += pdata->context;

}

structdata * point = (structdata*)mallc(sizeof(structdata));

point->id = pdata->id;

point-contest = pdata->context;

valueobj[id] = point;

}

//直接取map值的两种方法

方法1：

Int main()

{

Map mapStudent;

mapStudent.insert(pair(1, “student_one”));

mapStudent.insert(pair(2, “student_two”));

mapStudent.insert(pair(3, “student_three”));

int nSize = mapStudent.size()

//此处有误，应该是 for(int nIndex = 1; nIndex <= nSize; nIndex++)

//by rainfish

for(int nIndex = 0; nIndex < nSize; nIndex++)

{

Cout<}

}

方法2：

map::iterator iter;

iter = g_protocol_map.find(q.fieldValue(3));

if(iter != g_protocol_map.end())

{

fr.procotolgroup_id = g_protocol_map[q.fieldValue(3)]; //可以看出可以直接把value赋给某个变量

}

fr.linkgroup_id = q.fieldValue(4);