我有IF语句的问题 [英] I have problem with IF statement

问题描述

当我尝试使用int变量和字符串变量的条件

它会出错



请帮帮我



Ajith



我尝试过：

When I try condition with int variable and string variable
it gives an error

Please help me

Ajith

What I have tried:

int nSet =0 ;
int nCount=0 ;
string  cPrevtag ="";

/* nCount and cPrevtag change with my method calling

if (nCount == 1 && cPrevtag = 'O')
   {
     nSet = nSet + 1;

   }

推荐答案

这里有两件事：

Two things wrong here:

if (nCount == 1 && cPrevtag = 'O')

1）cPrevtag被声明为字符串，但你的比较是用一个字符 - 这是不允许的。

2）=是一个赋值，而不是一个比较：C＃需要布尔结果（不像C和C ++那样使用非） -Zero-是真）。比较运算符是==



试试这个：

1) cPrevtag is declared as a string, but your comparison is with a character - that isn;t allowed.
2) "=" is an assignment, not a comparison: and C# requires boolean results (unlike C and C++ which work with "non-zero-is-true"). The comparison operator is "=="

Try this:

if (nCount == 1 && cPrevtag == "O")

您的代码存在许多问题，但这会编译。不知道它是否有效，因为你没有显示你的应用程序的其余部分：

There are numerous problems with your code, but this will compile. No idea if it works, since you don't show the rest of your app:

int nSet =0 ;
int nCount=0 ;
string cPrevtag ="";

/* nCount and cPrevtag change with my method calling */

if (nCount == 1 && cPrevtag == "O")
{
    nSet = nSet + 1;

}

正如其他人所说，你无法将字符串与a进行比较字符（单引号表示一个字符）。此外，您必须使用==进行比较。最后，您的评论未被关闭* /



Matt

As others have noted, you can't compare a string to a character ( single quotes indicate a character). Also, you have to use == for comparison. Finally, your comment wasn't closed */

Matt

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