C++中string类的中文问题

[ufouser]

#include <ctime>
#include <iostream>
#include <string>
using namespace std;

int main()
{
string str = "一二三四年";
cout << str.length() << endl
<< str.substr(0,2) << endl
<< str.substr(2,4) << endl
<< str.substr(4,6) << endl
<< str.substr(6,8) << endl
<< str.substr(8,10) << endl;
return 0;
}

想一个一个汉字输出的, 结果老是输出几个

[qhfu]

#include <ctime>
#include <iostream>
#include <string>
using namespace std;

int main()
{
string str = "一二三四年";
cout << str.length() << endl
<< str.substr(0,2) << endl
<< str.substr(2,2) << endl
<< str.substr(4,2) << endl
<< str.substr(6,2) << endl
<< str.substr(8,2) << endl;
return 0;
}

[healer_kx]

看你的系统的默认编码方式,
中文系统一般是GBK-GB2312的,英文一般是ISO_8859_1
;
GBK是2个字节一个汉字,/

哦,你问的不是这个啊. ... ...

大哥,substr不是你那么用的哦, 这不是VB, 是第一个,取几个

<< str.substr(0,2) << endl
<< str.substr(2,2) << endl
<< str.substr(4,2) << endl
<< str.substr(6,2) << endl
<< str.substr(8,2) << endl;

[qhfu]

basic_string substr(
size_type _Off = 0,
size_type _Count = npos//The number of characters that are to be copied if they are present.
) const;

[healer_kx]

前面就不该说那些没有用的, 晚了...

[leifen]

#include <ctime>
#include <iostream>
#include <string>
using namespace std;

int main()
{
string str = "Ò»¶þÈýËÄÄê";

cout << str.length() << endl
<< str.substr(0,2) << endl
<< str.substr(2,2) << endl
<< str.substr(4,2) << endl
<< str.substr(6,2) << endl
<< str.substr(8,2) << endl;
return 0;
}

[foochow]

呵呵,楼主搞错substr的用法了

[foochow]

//楼主按区间来做,要这样..
#include<iterator>
#include <iostream>
#include <string>
using namespace std;

int main()
{
string str = "一二三四年";
string::iterator it=str.begin();
cout << str.length() << endl
<< string(it+0,it+2) << endl
<< string(it+2,it+4) << endl
<< string(it+4,it+6) << endl
<< string(it+6,it+8) << endl
<< string(it+8,it+10) << endl;
return 0;
}

[ufouser]

哈哈 我晕 多谢各位