/// 按下符号时进行计算
private void Flag_mul_Click(object sender, EventArgs e)
{
numStr.Clear(); ///清空里面的东西
double result = 0; //保存返回的结果
string text = ((Button)sender).Text;
switch (text)
{
case "+":
nextFlag = prevFlag; ///保存前一个
prevFlag = FlagEnum.ADD;
break;
case "-":
nextFlag = prevFlag;
prevFlag = FlagEnum.SUB;
break;
case "*":
nextFlag = prevFlag;
prevFlag = FlagEnum.MUL;
break;
case "/":
nextFlag = prevFlag;
prevFlag = FlagEnum.DIV;
break;
case "Mod":
nextFlag = prevFlag;
prevFlag = FlagEnum.MOD;
break;
case "=":
nextFlag = prevFlag;
prevFlag = FlagEnum.EQ;
break;
case "CE":
//nextFlag = prevFlag;
//prevFlag = FlagEnum.CE;
caculate.ClearStack();
return; ///end
break;
}
///进行计算操作
if (flag)
{
flag = false;
return;///第一次遇到符号不操作
}
else
{
result = CaculateCore(nextFlag);
}
text_show_caclute.Text = "" + result;
}
private bool flag; ///第一次遇到符号不计算标识
public Caculate()
{
InitializeComponent();
numStr = new StringBuilder();
caculate = new Caculate10();
radioButton2.Checked = true;///默许十进制
caculate.ClearStack();
init();
}