为什么我的代码在说我的构建成功时没有运行？

问题描述

大家好，我是C＃的新手。

我不知道为什么我的代码不想运行。

一旦我开始运行我的代码，cmd提示符上没有任何内容。

它只是显示一个空白屏幕。



我尝试过：



我必须编写一个C＃控制台程序，将温度以摄氏度转换为华氏度。

显示-40摄氏度到+40摄氏度的所有值，步长为5度。



这是我到目前为止所得到的：

Hi guys, I'm new to C#.
I'm not sure why my code doesn't want to run.
Once I start to run my code, nothing comes up on the cmd prompt.
It just shows a blank screen.

What I have tried:

I have to write a C# console program that converts temperature in degrees Celsius to degrees Fahrenheit.
Showing all values from –40 degrees Celsius to +40 degrees Celsius in steps of 5 degrees.

This is what I got so far:

<pre>
using System;
namespace TemperatureConverter
{
    class Program
    {
        static void Main()
        {
            int c, f;
            for (c = -40; c <= 40; c =+ 5);
            f = 9 / 5 * c + 32;
            Console.WriteLine("c: {0}; f: {1}", c, f);
        }
    }
}

我不知道我的代码是否正确。

非常感谢你的帮助。

I don't know if my code is right or not.
Your assistance is much appreciated.

推荐答案

for (c = -40; c <= 40; c =+ 5);

末尾的分号将终止循环 - 所以它永远不会做任何事情

在体内。删除分号。

增量运算符也是错误的：

The semicolon at the end will terminate the loop - so it will never do anything
inside the body. Remove the semicolon.
And the increment operator is wrong as well:

c=+ 5

表示将c设置为5，而不是将5添加到c。你可能想要

means "set c to 5", not "add 5 to c". You probably want

c += 5

for (c = -40; c <= 40; c =+ 5);
f = 9 / 5 * c + 32;
Console.WriteLine("c: {0}; f: {1}", c, f);

如果你想在你的循环中有多个语句，你需要一个复合语句 - 这是一种说法把大括号括在它们周围的奇特方式。

9和5是整数，所以9/5也是一个整数：1。你需要浮点值：9.0和5.0而不是。

还有另外一个问题：如果你修复了这个并运行调试器中的这段代码，你可能看不到任何东西，因为命令提示符会很快打开，打印和关闭。最后添加

If you want more than one statement inside your loop, you need a compound statement - which is a fancy way of saying "put curly brackets round them".
9 and 5 are integers, so 9 / 5 is also an integer: 1. You need floating point values: 9.0 and 5.0 instead.
There's one other problem as well: if you fix this and run this code in the debugger, you probably won't see anything as the command prompt will open, print and shut really quickly. Add

Console.ReadLine();

，它将暂停直到您按ENTER键。

试试这个：

at the end, and it will pause until you press ENTER.
Try this:

static void Main()
    {
    float c, f;
    for (c = -40; c <= 40; c += 5)
        {
        f = 9.0 / 5.0 * c + 32;
        Console.WriteLine("c: {0}; f: {1}", c, f);
        }
    Console.ReadLine();
    }

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