【发布时间】：2017-11-13 10:44:23
【问题描述】：
我对编码很陌生，因此对于任何业余错误，我深表歉意。我正在尝试编写一个问题，该问题可以根据他们的性别、身高、体重、年龄和运动量来计算人的基础代谢率。在我尝试这样做时，我尝试使用两个 if 语句。第一个 if 语句表示，如果他们选择男性/女性，它将通过某种算法运行用户输入。第二个 if 语句应该是用户锻炼的频率。第二个输入是我遇到困难的输入。我不知道如何将 BMR 乘以锻炼量。很多时候，答案是 0。我真的开始认为我的逻辑搞砸了。我会接受任何和所有的批评、建议和建议。我只是想学习！
谢谢。
这是我的代码
namespace WindowsFormsApplication9
{
public partial class calorieCalculator : Form
{
double malebmr, femalebmr, calories;
int bmrmult;
string gender, exercise;
double height, weight, age;//variables
public calorieCalculator()
{
InitializeComponent();
}
private void calorieCalculator_Load(object sender, EventArgs e)
{
}
private void calculateButton_Click(object sender, EventArgs e)
{
//get personal information
height = double.Parse(heightTextBox.Text);
weight = double.Parse(weightTextBox.Text);
age = double.Parse(ageTextBox.Text);
//select gender
if (genderList.SelectedIndex != -1)
{
gender = genderList.SelectedItem.ToString();
switch (gender)
{
case "Male":
//perform calculation
malebmr = (weight * 10 + height * 6.25 - age * 5 - 5);
calories = malebmr * bmrmult;
bmrDisplay.Text = ("Your base metabolic rate burns " + calories+ " calories");
break;
case "Female":
femalebmr = weight * 10 + height * 6.25 - age * 5 - 161;
MessageBox.Show("You should eat:" + femalebmr + "calories");
break;
}
}
if (exerciseList.SelectedIndex !=-1)
{
string exercise;
exercise = exerciseList.SelectedItem.ToString();
switch (exercise)
{
case "Light exercise (1–3 days per week)":
bmrmult = (decimal)1.375;
break;
case "Moderate exercise (3–5 days per week)":
bmrmult = (int)1.55m;
break;
case "Heavy exercise (6–7 days per week)":
bmrmult = (int)1.725m;
break;
case "Very heavy exercise (twice per day, extra heavy workouts)":
bmrmult = (int)1.9m;
break;
}
}
}
编辑：这里是公式
if Male
BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5
if Female
BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161
Little to no exercise Daily kilocalories needed = BMR x 1.2
Light exercise (1–3 days per week) Daily kilocalories needed = BMR x 1.375
Moderate exercise (3–5 days per week) Daily kilocalories needed = BMR x 1.55
Heavy exercise (6–7 days per week) Daily kilocalories needed = BMR x 1.725
Very heavy exercise (twice per day, extra heavy workouts) Daily kilocalories needed = BMR x 1.9
编辑 2：这是我的更新代码！
`using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication9
{
public partial class calorieCalculator : Form
{
double malebmr, femalebmr, calories;
int bmrmult;
string gender, exercise;
double height, weight, age;//variables
public calorieCalculator()
{
InitializeComponent();
}
private void calorieCalculator_Load(object sender, EventArgs e)
{
}
private void calculateButton_Click(object sender, EventArgs e)
{
//get personal information
height = double.Parse(heightTextBox.Text);
weight = double.Parse(weightTextBox.Text);
age = double.Parse(ageTextBox.Text);
//select gender
if (exerciseList.SelectedIndex != -1)
{
string exercise;
exercise = exerciseList.SelectedItem.ToString();
switch (exercise)
{
case "Light exercise (1–3 days per week)":
bmrmult = (int)1.375m;
break;
case "Moderate exercise (3–5 days per week)":
bmrmult = (int)1.55m;
break;
case "Heavy exercise (6–7 days per week)":
bmrmult = (int)1.725m;
break;
case "Very heavy exercise (twice per day, extra heavy workouts)":
bmrmult = (int)1.9m;
break;
}
}
if (genderList.SelectedIndex != -1)
{
gender = genderList.SelectedItem.ToString();
switch (gender)
{
case "Male":
//perform calculation
malebmr = (weight * 10) + (height * 6.25) - (age * 5) - 5;
calories = malebmr * bmrmult;
bmrDisplay.Text = ("Your base metabolic rate burns " + calories + " calories");
break;
case "Female":
femalebmr = weight * 10 + height * 6.25 - age * 5 - 161;
MessageBox.Show("You should eat:" + femalebmr + "calories");
break;
}
}
}
}
}
【问题讨论】：
-
你调试代码了吗？您是否检查了哪一行代码会导致问题？一般测量BMR的公式是什么？看看你做计算的方式，我认为你需要纠正它。
-
bmrmult相关代码最后执行，这就是为什么当你根据性别计算 BMR 时它的值将为零的原因。这就是为什么卡路里值一直为零的原因calories = malebmr * bmrmult为零，因为 bmrmult 为零。 -
@ChetanRanpariya 好主意。不幸的是，我切换了代码，但仍然没有得到正确的计算。这是我的公式。
-
@ChetanRanpariya 我用公式更新了帖子。
-
尝试将括号与代码中的公式相同。
malebmr = (weight * 10) + (height * 6.25) - (age * 5) - 5
标签： c#