好的，所以我有一个程序要求年龄，体重，身高和性别。然后它使用if语句相应地计算你的BMR，然后它使用更多的if语句来计算你的每日卡路里摄入量。 （DCI）在显示DCI之后，我需要一个WHILE循环，它要求用户输入卡路里量，然后从DCI中减去它，使其变为剩余的卡路里。我需要帮助的代码位于最底层。有人告诉我，我不需要为用户输入的数字做一个变量，但可以直接从DCI中减去它，这样就可以变成剩余的卡路里。
using System;
namespace Shaft_Lab4
{
class MainClass
{
public static void Main (string[] args)
{
int weight, height, age, gender;
double exerciseFactor;
double DCI = 0;
Console.Write("Enter your age in years ");
age = Convert.ToInt32 (Console.ReadLine());
Console.WriteLine ("Enter your weight in pounds ");
weight = Convert.ToInt32 (Console.ReadLine());
Console.WriteLine ("Enter your height in inches ");
height = Convert.ToInt32 (Console.ReadLine ());
Console.WriteLine ("Gender? Enter male/female (1 for Male, 2 for Female) ");
gender= Convert.ToInt32 (Console.ReadLine());
Console.WriteLine("To calculate your daily calories allowed, please select your level of exercise activity");
// exercise intensity levels
Console.WriteLine("1. You don't exercise"); // bmr x 1.2
Console.WriteLine("2. You engage in light exercise one to three days a week"); // bmr x 1.375
Console.WriteLine("3. You exercise moderately three to five times a week"); // bmr x 1.55
Console.WriteLine("4. You exercise intensely six to seven days a week"); // bmr x 1.725
Console.WriteLine("5. you exercise intensely six to seven days a week and have a physically active job"); // bmr x 1.9
exerciseFactor = Convert.ToDouble (Console.ReadLine ());
// MALE if statements
if (gender == 1)
{
Console.WriteLine ("Age: " + age);
Console.WriteLine ("Height: " + height);
Console.WriteLine ("Weight: " + weight);
Console.WriteLine ("Gender: Male");
double maleBMR = (66 + (6.23 * weight) + (12.7 * height) - (6.8* age));
Console.WriteLine ("Your BMR is: " + maleBMR);
if (exerciseFactor == 1) {
DCI = maleBMR * 1.2;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 2) {
DCI = maleBMR * 1.375;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 3) {
DCI = maleBMR * 1.55;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 4) {
DCI = maleBMR * 1.725;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 5) {
DCI = maleBMR * 1.9;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
// FEMALE if statements
}
if (gender == 2)
{
Console.WriteLine ("Age: " + age);
Console.WriteLine ("Height: " + height);
Console.WriteLine ("Weight: " + weight);
Console.WriteLine ("Gender: Female");
double femaleBMR = (655 + (4.35 * weight) + (4.7 * height) - (4.7 * age));
Console.WriteLine ("Your BMR is: " + femaleBMR);
if (exerciseFactor == 1) {
DCI = femaleBMR * 1.2;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 2) {
DCI = femaleBMR * 1.375;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 3) {
DCI = femaleBMR * 1.55;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 4) {
DCI = femaleBMR * 1.725;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
if (exerciseFactor == 5) {
DCI = femaleBMR * 1.9;
Console.WriteLine ("Your daily calories allowed is " + DCI);
}
}
//THIS IS WHERE I NEED HELP
string response = "YES";
while (response == "YES") {
Console.WriteLine ("Enter the amount of calories consumed: ");
Convert.ToInt32 (Console.ReadLine ());
Console.WriteLine ("Do you want to continue? (YES / NO)");
}
}
}
}
答案 0 :(得分：0)
DCI变量属于double类型，因此我建议您使用double.TryParse代替Convert.ToInt32。然后你必须从用户那里读取yes或no选项，所以修改while，如下所示：
while (response == "YES")
{
double userInput;
Console.WriteLine ("Enter the amount of calories consumed: ");
if( double.TryParse(Console.ReadLine(), out userInput);
{
DCI -= value; // performing subtraction
Console.WriteLine("Do you want to continue? (YES / NO)");
response = Console.ReadLine().ToUpper();
}
else
{
Console.WriteLine("Invalid input");
}
}
答案 1 :(得分：0)
只需循环，读入并减去它。
string response = "YES";
var value = 0;
while (response == "YES") {
Console.WriteLine ("Enter the amount of calories consumed: ");
Int.TryParse(Console.ReadLine(), out value);
DCI -= value;
Console.WriteLine("Do you want to continue? (YES / NO)");
response = Console.ReadLine().ToUpper();
}
答案 2 :(得分：0)
您需要的主要部分是：
string response = "YES";
while (response == "YES")
{
caloriesAllowed -= ConsoleReadInteger("Enter the amount of calories consumed: ");
Console.WriteLine("Your remaining calories allowed is " + caloriesAllowed);
Console.WriteLine("Do you want to continue? (YES / NO)");
response = Console.ReadLine().ToUpperInvariant();
}
这是您的整个代码 - 我已经为您重构，以便您可以了解如何使用某些代码提高效率：
public static int ConsoleReadInteger(string message)
{
Console.WriteLine(message);
return Convert.ToInt32(Console.ReadLine());
}
public static void Main(string[] args)
{
int age = ConsoleReadInteger("Enter your age in years ");
int weight = ConsoleReadInteger("Enter your weight in pounds ");
int height = ConsoleReadInteger("Enter your height in inches ");
int gender = ConsoleReadInteger("Gender? Enter male/female (1 for Male, 2 for Female) ");
Console.WriteLine("To calculate your daily calories allowed, please select your level of exercise activity");
Console.WriteLine("1. You don't exercise"); // bmr x 1.2
Console.WriteLine("2. You engage in light exercise one to three days a week"); // bmr x 1.375
Console.WriteLine("3. You exercise moderately three to five times a week"); // bmr x 1.55
Console.WriteLine("4. You exercise intensely six to seven days a week"); // bmr x 1.725
Console.WriteLine("5. you exercise intensely six to seven days a week and have a physically active job"); // bmr x 1.9
Dictionary<int, double> exerciseFactors = new Dictionary<int, double>()
{
{ 1, 1.2 }, { 2, 1.375 }, { 3, 1.55 }, { 4, 1.725 }, { 5, 1.9 },
};
double exerciseFactor = exerciseFactors[Convert.ToInt32(Console.ReadLine())];
Console.WriteLine("Age: " + age);
Console.WriteLine("Height: " + height);
Console.WriteLine("Weight: " + weight);
Console.WriteLine("Gender: " + (gender == 1 ? "Male" : "Female"));
double bmr =
gender == 1
? 66 + (6.23 * weight) + (12.7 * height) - (6.8 * age)
: 655 + (4.35 * weight) + (4.7 * height) - (4.7 * age);
double caloriesAllowed = bmr * exerciseFactor;
Console.WriteLine("Your BMR is: " + bmr);
Console.WriteLine("Your daily calories allowed is " + caloriesAllowed);
string response = "YES";
while (response == "YES")
{
caloriesAllowed -= ConsoleReadInteger("Enter the amount of calories consumed: ");
Console.WriteLine("Your remaining calories allowed is " + caloriesAllowed);
Console.WriteLine("Do you want to continue? (YES / NO)");
response = Console.ReadLine().ToUpperInvariant();
}
}
您的BMR计算似乎有误。此外，此代码的错误检查非常少，但只要您输入有效的输入，它就可以正常运行。