這是我的第一個(gè)有幾種方法的程序第一個(gè)必須將高度轉(zhuǎn)換為英寸2、計(jì)算BMI第三次接收 BMI 并返回狀態(tài)第 4 個(gè)是主要的，必須調(diào)用輸入并生成輸出問題是它不計(jì)算 BMI - 它輸出 0。當(dāng)我只用一種方法運(yùn)行它時(shí)，它工作正常?？赡艹隽耸裁磫栴}？package bmiCalculator;java.util.Scanner;public class BmiCalculator {public static double bmi;public static int height;public static int feet;public static int inches;public static int weight;public static String status; public static void convertToInches (){ height = feet * 12 + inches; } public static void bmiCalculator (){ bmi = (weight * 703) / (height * height);} public static void weightStatus () { if (bmi < 18.5){ status = "underweight"; } else if (bmi <= 24.9){ status = "normal"; } else if (bmi <= 29.9){ status = "overweight"; } else if (bmi >= 30){ status = "obese"; } } public static void main (String[] args){ System.out.println("Put your height in ft and inches"); Scanner sc = new Scanner(System.in); feet = sc.nextInt(); inches = sc.nextInt(); System.out.println("Put your weight in pounds"); weight = sc.nextInt(); System.out.println("Height: " + feet + " feet, " + inches + " inches"); System.out.println("Weight: " + weight + " pounds"); System.out.println("Your BMI is " + bmi + "category" + status); } }
2 回答
Helenr
TA貢獻(xiàn)1780條經(jīng)驗(yàn) 獲得超4個(gè)贊
聲明這些方法并不意味著所有方法都會(huì)執(zhí)行。您需要main相應(yīng)地調(diào)用這些方法。
例如：
...
System.out.println("Put your weight in pounds");
weight = sc.nextInt();
System.out.println("Height: " + feet + " feet, " + inches + " inches");
System.out.println("Weight: " + weight + " pounds");
// call corresponding method to calculate:
convertToInches();
bmiCalculator();
weightStatus();
// now all of those method are executed.
System.out.println("Your BMI is " + bmi + "category" + status);
將所有這些方法和屬性聲明為靜態(tài)并不是一個(gè)好的做法。請(qǐng)了解OOP工作原理。
呼如林
TA貢獻(xiàn)1798條經(jīng)驗(yàn) 獲得超3個(gè)贊
首先，您需要在用戶輸入這樣的值后調(diào)用這些方法。
...
System.out.println("Put your weight in pounds");
weight = sc.nextInt();
convertToInches();
bmiCalculator();
weightStatus();
System.out.println("Height: " + feet + " feet, " + inches + " inches");
...
調(diào)用方法的順序很重要，因?yàn)樗鼈冎g存在依賴關(guān)系。此外，您需要在 BMI 除法之前將除數(shù)和被除數(shù)轉(zhuǎn)換為雙倍，因?yàn)?int/int = int 和 java 舍入該值。
public static void bmiCalculator() {
bmi = (double)(weight * 703) / (double)(height * height);
}
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