由于i++与++i的运算顺序不同而导致的死循环

标签：运算 ++ param int curPage 死循环 nextPage

死循环的原因:
i++ 和 ++i的基本功能是相同的，都是对变量i进行自增1运算，从功能上讲相当于i =i+1 ;
两个的区别在于：
　　 int i=1,a=0;
　　 i++ 先运算在赋值​,例如 a = i++,先运算a=i,后运算i = i+1,所以结果是a == 1；
++i 先赋值在运算,例如 a = ++i,先运算i=i+1,后运算a = i,所以结果是a == 2。

---

public ResultEntity SyncDataXml(string interfaceCode, SyncDataParam param)
{
    int curPage = 1;
    int nextPage = 2;
    int totalPage = 2;
    if(param.Page != 0)
     {
         curPage = param.Page;
         nextPage = curPage++;// 死循环的原因
     }
    //递归
    if(nextPage <= totalPage)
     {
         var nextParam = new SyncDataParam
         {
             LastUpdateTime = param.LastUpdateTime,
             Page = nextPage
             };
         result = SyncDataXml(interfaceCode, nextParam);
     }
    return result;
}

---

public ResultEntity SyncDataXml(string interfaceCode, SyncDataParam param)
{
    int curPage = 1;
    int nextPage = 2;
    int totalPage = 2;
    if(param.Page != 0)
     {
         curPage = param.Page;
         nextPage = ++curPage;// 解决
     }
    //递归
    if(nextPage <= totalPage)
     {
         var nextParam = new SyncDataParam
         {
             LastUpdateTime = param.LastUpdateTime,
             Page = nextPage
             };
         result = SyncDataXml(interfaceCode, nextParam);
     }
    return result;
}

标签：运算,++,param,int,curPage,死循环,nextPage
From： https://www.cnblogs.com/qian-chang/p/death-cycle-caused-by-different-operations-of-i-and-i