Question

我正在创建一个计算课程分数的应用程序，然后根据分数输出一个字母等级。

总而言之，我不是数学上最伟大的，我在识别代码中的数学错误位置时遇到了问题，并且控制台因此而分割出过多的百分比值。

以下是控制台输出的内容：

My quiz percentage is 83.33333
my lab percentage is 72.916664
My Mid-Term percentage is 196.72131
my End-Term Percentage is 200.72131
My final percentage grade is 115.35263
Calculation error: possible percentage values between 1%-100%. Check your math and try again.

（最后一行只是一个if语句，表明存在计算错误。如果正确完成，它应该输出一个字母等级，由其他if语句处理。）

以下是我的代码：

//Quiz scores
float q1=20, q2=19, q3=14, q4=17, actualQuizPoints=70, actualPoints=80, totalMidTermPoints=120, actualMidTermPoints=61; 

//Lab scores
float l1=20, l2=19, l3=14, l4=17;


void setup() {
  noLoop();
  size(100,100);
  }

void draw() {  
  float totalQuizPoints=Addition(q1, q2, q3, q4);
  float quizPercentage = Percentage(totalQuizPoints, actualQuizPoints);
  float totalLabPoints =Addition(l1, l2, l3, l4);
  float labPercentage=Percentage(totalLabPoints, actualPoints);
  float midTermPercentage=Percentage(totalMidTermPoints, actualMidTermPoints);
  float endTermPercentage=midTermPercentage+4;
  float finalPercentage=Addition(quizPercentage, labPercentage, midTermPercentage, endTermPercentage)/4;
  println("My quiz percentage is " + quizPercentage);
  println("my lab percentage is " + labPercentage);
  println("My Mid-Term percentage is " + midTermPercentage);
  println("my End-Term Percentage is " + endTermPercentage);
  println("My final percentage grade is " + finalPercentage);

  if (finalPercentage  <60) {
  println ("My final letter grade is F.");
      }


  if (finalPercentage  >=60 & finalPercentage <70) {
  println ("My final letter grade is D.");
      }

  if (finalPercentage  >=70 & finalPercentage <80) {
  println ("My final letter grade is C.");
      }

  if (finalPercentage  >=80 & finalPercentage <90) {
  println ("My final letter grade is B.");
      }

  if (finalPercentage  >=90 & finalPercentage <=100) {
  println ("My final letter grade is A.");
      }


  if (finalPercentage  >100) {
  println ("Calculation error: possible percentage values between 1%-100%. Check your math and try again.");
      }

   }

float Addition(Float n1, float n2, float n3, float n4) {
  float total=(n1+n2+n3+n4)/120*100;
  return total;
   }

float Percentage(float totalpoints, float actualpoints) {
  float percentageIs=(totalpoints/actualpoints)*100;
  return percentageIs;
   }

Answer 1

您与使用total和actual这两个词的方式不一致。

对于测验点和实验室积分，您使用total表示所有获得积分的总和，actual表示可以获得的积分。

对于期中，期末和最后一点，你可以转换它们。

您需要修改代码，以便与传入percentage()函数的参数保持一致。

Answer 2

不要在乎其他人的想法，但我只想尝试回答有趣的事情。没有理解你的所有代码。但我已将我的整个代码发布到我的＆＃34;调查结果＆＃34;在底部。

我的评论是可选的

如果编译，至少底部的代码会给出0-100％的实际百分比：）

结果：

My quiz percentage is 87.5
my lab percentage is 87.5
My Mid-Term percentage is 50.833332
my End-Term Percentage is 54.833332
My final percentage grade is 70.166664
My final letter grade is C.

不太确定这段代码是什么：

void setup() {
    noLoop();
    size(100,100);
}

我主要更改了添加方法以实际添加4个数字：

float Addition(Float n1, float n2, float n3, float n4) {
  float total=(n1+n2+n3+n4);
  return total;
   }

我认为我改变了一些参数f。实例：

float quizPercentage = Percentage(totalQuizPoints, actualQuizPoints);

到actualPoints。否则它将计算70/70 * 100。这是100

我还互相切换参数：

  float midTermPercentage=Percentage(totalMidTermPoints, actualMidTermPoints);

我不太确定这意味着什么，但我离开了它：

 float endTermPercentage=midTermPercentage+4;

整个代码：

class Grading{
//Quiz scores
float q1=20, q2=19, q3=14, q4=17, actualQuizPoints=70, actualPoints=80, totalMidTermPoints=120, actualMidTermPoints=61; 

//Lab scores
float l1=20, l2=19, l3=14, l4=17;

    public static void main(String[] args){
        Grading g=new Grading();
        g.draw();
    }




void draw() {  
  float totalQuizPoints=Addition(q1, q2, q3, q4);
  float quizPercentage = Percentage(totalQuizPoints, actualPoints);
  float totalLabPoints =Addition(l1, l2, l3, l4);
  float labPercentage=Percentage(totalLabPoints, actualPoints);
  float midTermPercentage=Percentage(actualMidTermPoints, totalMidTermPoints);
  float endTermPercentage=midTermPercentage+4;
  float finalPercentage=Addition(quizPercentage, labPercentage, midTermPercentage, endTermPercentage)/4;
  System.out.println("My quiz percentage is " + quizPercentage);
  System.out.println("my lab percentage is " + labPercentage);
  System.out.println("My Mid-Term percentage is " + midTermPercentage);
  System.out.println("my End-Term Percentage is " + endTermPercentage);
  System.out.println("My final percentage grade is " + finalPercentage);

  if (finalPercentage  <60) {
  System.out.println ("My final letter grade is F.");
      }


  if (finalPercentage  >=60 & finalPercentage <70) {
  System.out.println ("My final letter grade is D.");
      }

  if (finalPercentage  >=70 & finalPercentage <80) {
  System.out.println ("My final letter grade is C.");
      }

  if (finalPercentage  >=80 & finalPercentage <90) {
  System.out.println ("My final letter grade is B.");
      }

  if (finalPercentage  >=90 & finalPercentage <=100) {
  System.out.println ("My final letter grade is A.");
      }


  if (finalPercentage  >100) {
  System.out.println ("Calculation error: possible percentage values between 1%-100%. Check your math and try again.");
      }

   }

float Addition(Float n1, float n2, float n3, float n4) {
  float total=(n1+n2+n3+n4);
  return total;
   }

float Percentage(float totalpoints, float actualpoints) {

  float percentageIs=(totalpoints/actualpoints)*100;
  return percentageIs;
   }
}

数学问题导致百分比错误

2 个答案: