分割字符串C++

//先判断是否以分隔符delim结束，如果不是，就添加delim结尾
//取出字符串，放入vector
void SplitString(string &str, const char *delim, vector<string> &vec)
{
if(str.find(delim, str.size()-strlen(delim)) == string::npos)
{
str.append(delim);
}
size_t start = 0;
size_t end = 0;
while( (end = str.find(delim, start)) != string::npos )
{
vec.push_back(str.substr(start, end-start));
}
}