F5 output not showing

Question

0.00/5 (No votes)

See more:

This is my first day of coding.when I press F5 to see out put it just shows for a second .how do I see the output ?
below is my code
regards

What I have tried:

C#

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

namespace Mod1_Lab1
{
    class Program
    {
        static void Main(string[] args)
        {
            // create variable of different data types
            // initialize with a default value
            string firstName = "";
            string lastName = "";
            int age = 0;
            string street = "";
            string city = "";
            string country = "";
            DateTime birthDate;

            // Assign some value
            firstName = "Tom";
            lastName = "Thumb";
            age = 48;
            street = "street 1";
            city = "anytown";
            country = "US";
            birthDate = new DateTime(2013, 6, 5);

            // output to the console window

            // use simple output with just variable name
            Console.WriteLine(firstName);
            Console.WriteLine(lastName);

            // use palce holder style
            Console.WriteLine("{0} years old.", age);

            // use string concatenation
            Console.WriteLine(street + ", " + city + ", " + country);

            // use string interpolation
           // Console.WriteLine("Born on {birthDate}");

        }
    }
}

Posted 8-Apr-18 22:55pm

Member 13769540

Updated 8-Apr-18 23:08pm

OriginalGriff

v2

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Jochen Arndt · Accepted Answer · 2018-04-08T23:04:00

Solution 1

You have a console application and run it from within Visual Studio. That will open a Windows command prompt window (a console) and execute your application. When your application terminates, the command prompt window is also closed.

To avoid closing that window and read what your application has printed, call a command that reads from the keyboard and blocks until something has been entered.

In your case calling the Console.ReadKey Method (System)[^] at the end of your Main function will do the job.

Posted 8-Apr-18 23:04pm

Jochen Arndt

Comments

Member 13769540 9-Apr-18 5:08am

added this and it works thanks

while (Console.ReadKey().Key != ConsoleKey.Enter) { }

Jochen Arndt 9-Apr-18 5:36am

That is like the other solutions which all require Enter to be pressed.
When using Console.ReadKey(), pressing any key besides modifier keys like Shift, Ctrl, Alt will close the window.

F-ES Sitecore · Accepted Answer · 2018-04-08T23:06:00

Solution 2

Make the last line of your code something like

Console.ReadLine();

That will make the console pause until you press enter giving you an opportunity to see the output.

Posted 8-Apr-18 23:06pm

F-ES Sitecore

OriginalGriff · Accepted Answer · 2018-04-08T23:08:00

The problem is that it runs, reaches the end of the main method, and the app exits - so you can't see the output.

There are two ways to get round this, and they both involve "stopping" your app before it exits.
For a Console app like this, that's pretty easy: add one line just before teh end of teh method:

Console.WriteLine(street + ", " + city + ", " + country);

   // use string interpolation
   // Console.WriteLine("Born on {birthDate}");
   Console.ReadLine();   // <<<--- Add this.
}

The other is a little more complex, but a lot more flexible: use the debugger.
In Visual Studio, put the cursor on the last line of the method - the closing curly bracket. Look at the menu bar and open the "Debug" menu.
Select the "Toggle Breakpoint" option. You will see a "Red dot" appear at the beginning of the line - that says "Breakpoint here" and now you know where it is you can click that area and it will toggle a breakpoint at that line. "Red dot" there = breakpoint, "no Red Not" = no breakpoint.
When you have a breakpoint set, run your app using F5 again - this time, when it hits the breakpoint line, your app will stop and you can look at the output or - much more usefully - you can use the debugger to see your variable contents, and control your app while it is running! Get some practice with this, it's the best friend a developer can have!