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 程序中使用的范围for需要编译器支持c++11

#include
   
      #include
    
       #include
     
        using namespace std;string strip(const string &str,char ch=' '){	//除去str两端的ch字符	int i = 0;	while (str[i] == ch)// 头部ch字符个数是 i		i++;	int j = str.size() - 1;	while (str[j] == ch ) //		j--;			return str.substr(i, j+1 -i );}vector
      
        split(const string &str, string ch = " "){	//以 ch 为分割字符，把 cstr 分割为多个元素存到vector	vector
       
        ret;	int pos = 0;	int start = 0;	while ((pos = str.find(ch, start) )!= string::npos )	{		//cout << "pos:" << pos << endl;		if (pos>start)		ret.push_back(str.substr(start, pos-start));		start = pos+ch.size();	}	if (str.size()>start)	ret.push_back(str.substr(start));	return ret;}int main(){	string str = ".. first .. second  .. third ..";	for (string str : split(str,".")) //单个字符		cout << "-" << str << "-" << endl; 	for (string str : split(str,"..") ) //多个字符		cout << "-" << str <<"-"<
       
      
     
    
   

vs2013运行结果：