Question

我是编程的新手，我正在尝试创建一个循环，其中while条件基于变量但是我不知道它的正确语法。这就是我想要做的，即使它可能不被允许......我想。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    class Program
    {
        static void Main(string[] args)
        {
            float totalArea, areaUnbuilt;

            while (!float.TryParse(Console.ReadLine(), out totalArea, out areaUnbuilt)) 
            {
                Console.Clear();
                Console.WriteLine("Insert total area in square meters:");
                float.TryParse(Console.ReadLine(), out totalArea);
                Console.WriteLine("Insira are not built in square meters:");
                float.TryParse(Console.ReadLine(), out areaUnbuilt);

            }
        }
    }
}

Answer 1

您无法使用TryParse取回两个值。而是将代码更改为do..while循环

bool isArea = true;
bool isUnbuilt = true;
do
{
    Console.Clear();
    Console.WriteLine("Insert total area in square meters:");
    isArea = float.TryParse(Console.ReadLine(), out totalArea);
    Console.WriteLine("Insert area not built in square meters:");
    isUnbuilt = float.TryParse(Console.ReadLine(), out areaUnbuilt);
} while( !isArea || !isUnbuilt);

TryParse循环中的两个变量

1 个答案: