[英]Switch statement in a C# calculator
The calculator can't calculate percentage operations.计算器无法计算百分比运算。 I will provide the switch statement below.我将在下面提供 switch 语句。 I hope you can help me!我希望你可以帮助我!
It is only the last case "%": number = (percentage / 100) * totalNumber;
只有最后case "%": number = (percentage / 100) * totalNumber;
that doesn't work.那行不通。
The debugger says:调试器说:
Control cannot fall through from one case label to another.控制不能从一个案例标签传递到另一个案例标签。
private void button15_Click(object sender, EventArgs e) {
switch (operationPerformed) {
case "+":
textBox_Result.Text=(resultValue + Double.Parse(textBox_Result.Text)).ToString();
break;
case "-":
textBox_Result.Text = (resultValue - Double.Parse(textBox_Result.Text)).ToString();
break;
case "*":
textBox_Result.Text = (resultValue * Double.Parse(textBox_Result.Text)).ToString();
break;
case "/":
textBox_Result.Text = (resultValue / Double.Parse(textBox_Result.Text)).ToString();
break;
case "%":
number = (percentage / 100) * totalNumber;
default:
break;
}
}
I expect it to calculate the percentage of a certain number, but it doesn't work for some reason.我希望它计算某个数字的百分比,但由于某种原因它不起作用。
I think you make a mistake after case "%" :我认为你在 case "%" 之后犯了一个错误:
Actual formula for Calculating Percentage is: (Part / Whole) * 100计算百分比的实际公式是:(部分/整体)* 100
you should try something like this:你应该尝试这样的事情:
case "%":
result = (obtained / total) * 100;
break;
check this and please don't add pseudocode检查这个,请不要添加伪代码
case "%":
textBox_Result.Text = (Double.Parse(textBox_Result.Text) * resultValue / 100.0).ToString();
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