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一个逗号引发的血案
阅读量:152 次
发布时间:2019-02-28

本文共 574 字,大约阅读时间需要 1 分钟。

int GraphicAnalyze::GetOriginalIndex()//搜索之后,顺序会乱,所以还原到原来的顺序{   	int cc = Feature_ListBox.GetIndex();	CString aa;	Feature_ListBox.GetText(cc, aa);	//MessageBox(aa);//特征的值取出来了,但是索引不对	for (int i = 0; i < Properties.size(); i++)	{   		if (aa ==Properties[i]);		{    			cc = i;		    break;		}		else		{   			continue;		}	}	return cc;}

就是做的一个搜索功能,搜索出来之后,原来的值在LISTBox框中的索引就会变,所以需要还原索引

谁能想到,返回值一直是0

哎,起码测试了半个小时

if (aa ==Properties[i]);

这个逗号,是不是有点可爱,为什么不报错啊……

不管怎样都会往下执行break,i都没来得及加加
所以返回一直是0是有道理的。。。。。。。

if (aa ==Properties[i])

注意还有的情况,比如写成了

if (aa =Properties[i])

少一个等号也会出问题哎

诸君慎重

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