添加分数 (Java)

Question

在这个程序中，要求用户输入代表两个分数的 4 个整数。

先求分子，再求分母。然后求出秒的分子和分母

程序应该将两个分数相加并打印出来结果。

我不知道如何将分数相加

public class AddFractions extends ConsoleProgram
{
    public void run()
    {
        int nffraction = readInt("What is the numerator of the first fraction?: ");
        int dffraction = readInt("What is the denominator of the first fraction?: ");
        int nsfraction = readInt("What is the numerator of the second fraction?: ");
        int dsfraction = readInt("What is the denominator of the second fraction?: ");
        int sum = 
        System.out.print(nffraction + "/" + dffraction + " + " + nsfraction + "/" + dsfraction + "=" + sum);
    }
}

这是预期的输出“1/2 + 2/5 = 9/10”，但我无法计算出“= 9/10”部分。

Answer 1

要得到两个分数的总和 a/b + c/d 你需要做 (a*d + c*b)/b*d.

所以对于你的例子：

int numerator = (nffraction * dsfraction + nsfraction * dffraction)
int denominator = dsfraction * dsfraction
System.out.print(nffraction + "/" + dffraction + " + " + 
nsfraction + "/" + dsfraction + "=" + numerator + "/" + denominator);

虽然这不会简化为分数的最简单形式。

添加分数 (Java)

Adding Fractions (Java)

java

fractions