我正在嘗試以 C# 形式制作分數計算器。我只是無法正確計算這是 我的表格我希望它能夠計算結果。當您輸入 10/5 和 10/7 時，結果應該是 3 3/7 或者像這樣 結果應該如何我得到什么 我的結果這是我的代碼private void button1_Click(object sender, EventArgs e) // result bottom { double box_In_Top_Left = Convert.ToDouble(textBox1.Text); // Right UPPER BOX double box_In_Down_Left = Convert.ToDouble(textBox2.Text); // Venstra Nederst string double box_In_Top_Right = Convert.ToDouble(textBox3.Text); // H?jre OP string double box_In_Down_Right = Convert.ToDouble(textBox4.Text); // H?jre Nederst String double whole = box_In_Down_Right * box_In_Down_Left; // Whole (Bottom Part of A fraction string whole_String = Convert.ToString(whole); // Converts the Whole to a string textBox7.Text = whole_String; // Shows the Answer in the box in the bottom right double Calculation1 = box_In_Top_Left * box_In_Down_Right; // Calculates the top lefts box result double Calculation2 = box_In_Top_Right * box_In_Down_Left; // Calculates the top right box Result double part = Calculation2 + Calculation1; // Calculates answer for the top box string part_String = Convert.ToString(part); if (part >= whole) // if the part is bigger then the whole { double Amount_Of_times_greater = part / whole; string string_Amount_Of_times_greater = Convert.ToString(Amount_Of_times_greater); double Ekstra_greatnes = part / Amount_Of_times_greater; textBox6.Text = string_Amount_Of_times_greater; double Part_Whole = (part / Amount_Of_times_greater); if (Ekstra_greatnes == whole) { Part_Whole = Part_Whole - whole; string string_Part_Whole = Convert.ToString(Part_Whole); textBox8.Text = string_Part_Whole; } }
2 回答
眼眸繁星
TA貢獻1873條經驗 獲得超9個贊
我不知道您的邏輯是否正確，但我看到了第一個問題-> 可能來自平等測試：Ekstra_greatnes == whole
很難比較雙倍，
您可以嘗試使用以十進制表示法存儲數字的十進制類型。因此 0.1 將可以精確表示，或者您可以使用（在 microsoft 網站上看到）一個 epsilon 值來比較這兩個值：
// Initialize two doubles with apparently identical values
double double1 = .333333;
double double2 = (double) 1/3;
// Define the tolerance for variation in their values
double difference = Math.Abs(double1 * .00001);
// Compare the values
// The output to the console indicates that the two values are equal
if (Math.Abs(double1 - double2) <= difference)
Console.WriteLine("double1 and double2 are equal.");
else
Console.WriteLine("double1 and double2 are unequal.");
富國滬深
TA貢獻1790條經驗 獲得超9個贊
我建議將分子和分母分開存儲。最好的辦法是Fraction為此目的創建一個新結構。然后你可以使用歐幾里得算法來計算最大公約數。有了這些信息，您就可以格式化您的結果。
string FormatFraction(int numerator, int denominator)
{
int gcd = Gcd(numerator, denominator );
numerator /= gcd;
denominator /= gcd;
return $"{numerator/denominator} {Math.Abs(numerator/denominator)}";
}
int Gcd(int numerator, int denominator)
{
int a = Math.Abs(numerator);
int b = Math.Abs(denominator);
while (b != 0)
{
int temp = b;
b = a % b;
a = temp;
}
return a;
}
此代碼示例假定您正在使用支持字符串插值 ($"<interpolated string>") 的 c# 版本。如果不是，您可以用字符串連接替換格式分數的最后一行。
要添加兩個分數a = a_1 / a_2，b = b_1 / b_2您可以使用簡單的公式a + b = c = c_1 / c_2 = a_1 * b_2 + a_2 * b_1 / a_2 * b_2
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