使用C ++中的for循环遍历List

Question

H， 我有一个列表 Booklist ，现在我想为每个元素迭代它，我这样做但是它不正确所以有人建议怎么做？

 Book::Notes(string booklist)
{
for(int i = 0; i < booklist.Size(); i++)
        {
             string B1= booklist[i];

          }

Answer 1

SELECT
    [p.ProjectId],
    SUM(pf.size),
    COUNT(pr.ServerGroupId) AS [UnRestrictedFacility],
    CASE   
       WHEN COUNT(ps.CreatedBy) > 0 
          THEN 1 
          ELSE 0 
    END 
FROM
    Project p 
INNER JOIN
    ProjectFile pf on pf.Id = p.tId
INNER JOIN
    ProjectPartlink ppl ON pf.ProjectPartlinkId = ppl.ProjectPartlinkid  
                        AND ppl.ProjectId = p.projectid 
INNER JOIN
    ProjectRestriction pr ON pr.projectid = p.projectid 
INNER JOIN
    ProjectPreseed ps ON ps.projectid = p.projectid 
WHERE
    p.projectid = @projectid