subject_14079.htm

一些关于vc的问答

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序号：14079 发表者：hydy 发表日期：2002-09-03 13:41:09
<br>主题：怎么连接字符和数字啊？急！！！
<br>内容：请教<BR>int m_number1=7,m_number2=4;<BR>CString a[4]={"-","+","*","/"};<BR>int s=m_number1????a[0]????m_number_2;<BR>要使s=3怎么填写？？？？处。我不会写。<BR>谢谢！<BR>
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回复者：ONLYYOU 回复日期：2002-09-03 13:55:50
<br>内容：int m_number1=7,m_number2=4;<BR>char a[4]={'-','+','*','/'};<BR>int s;<BR>switch(a[i]){<BR>&nbsp;&nbsp;&nbsp;&nbsp;case'-':<BR>&nbsp;&nbsp;&nbsp;&nbsp;s = m_number1 - m_number2;<BR>&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;case'+':<BR>&nbsp;&nbsp;&nbsp;&nbsp;s = m_number1 + m_number2;<BR>&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;case'*':<BR>&nbsp;&nbsp;&nbsp;&nbsp;s = m_number1 * m_number2;<BR>&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;case'/':<BR>&nbsp;&nbsp;&nbsp;&nbsp;s = m_number1 / m_number2;<BR>&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;default:<BR>&nbsp;&nbsp;&nbsp;&nbsp;s = ERROR;<BR>}<BR>是这个意思吗?
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回复者：hydy 回复日期：2002-09-03 14:10:53
<br>内容：是的，十分感谢！不过有没有简单的方法？
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回复者：hydy 回复日期：2002-09-03 14:15:59
<br>内容：其实我在写个24点的程序，需要用四个运算符号进行循环。所以有此一说<BR>
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回复者：ONLYYOU 回复日期：2002-09-03 14:24:47
<br>内容：为什么用字符?用宏不行吗?
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回复者：hydy 回复日期：2002-09-03 14:35:09
<br>内容：可以啊，可是我不会用，谢谢请赐教。
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<font color=red>答案被接受</font><br>回复者：ONLYYOU 回复日期：2002-09-03 15:05:08
<br>内容：int m_number1=7,m_number2=4;<BR>#define PLUS&nbsp;&nbsp;m_number1 + m_number2<BR>#define MINUS m_number1 - m_number2<BR>#define MUL&nbsp;&nbsp; m_number1 * m_number2<BR>#define DIV&nbsp;&nbsp; m_number1 / m_number2<BR><BR>int a[4]={PLUS,MINUS,MUL,DIV};<BR><BR>int s = a[i];<BR>
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