Could someone explain why I have to convert _one to string but the other 3 variables in the following C#...











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I don't understand why I am getting a cannot convert to string with _one but not the other 3! Yes, I'm new to programming and loosing my mind trying to figure out why stackoverflow is requiring me to enter more words than I needed to ask my question!



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

namespace diviTwo
{
class Program
{
static void Main(string args)
{
//Print Test Problems
var n = "n";
var one = "-1 + 4 * 6";
var two = "(35 + 5) % 7";
var three = "14 + -4 * 6 / 11";
var four = "2 + 15 / 16 * 1 - 7 % 2";
Console.WriteLine(one+ n+ two+ n+ three+ n+ four+ n);

//Print Results of Test Problems
var _one = -1 + 4 * 6;
var _two = (35 + 5) % 7;
var _three = 14 + -4 * 6 / 11;
var _four = (2 + 15) / ((16 * 1) - (7 % 2));
Console.WriteLine(Convert.ToString(_one)+ n+ _two+ n+ _three+ n+ _four+ n);
}
}
}









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  • Take another look at your own code: Convert.ToString(_one). You are only converting _one to a string here, then trying to add the numeric variables to it.
    – Martin Parkin
    Nov 19 at 13:14






  • 1




    Possible duplicate of String Concatenation using '+' operator
    – mjwills
    Nov 19 at 13:16










  • What's the difference if you do not add? What is your problem?
    – SeM
    Nov 19 at 13:20










  • Problem is I didn't understand how C# decides what to do in my last WriteLine. @RobinBennett explained that if that first item is a string C# treats the rest of them as strings. I didn't know that and spent sometime trying to figure out why/how to make it work without conversion, gave up and found out how to convert that _one which visual studio seemed to raise the error on.
    – HELLHOUND0606
    Nov 19 at 13:46

















up vote
0
down vote

favorite












I don't understand why I am getting a cannot convert to string with _one but not the other 3! Yes, I'm new to programming and loosing my mind trying to figure out why stackoverflow is requiring me to enter more words than I needed to ask my question!



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

namespace diviTwo
{
class Program
{
static void Main(string args)
{
//Print Test Problems
var n = "n";
var one = "-1 + 4 * 6";
var two = "(35 + 5) % 7";
var three = "14 + -4 * 6 / 11";
var four = "2 + 15 / 16 * 1 - 7 % 2";
Console.WriteLine(one+ n+ two+ n+ three+ n+ four+ n);

//Print Results of Test Problems
var _one = -1 + 4 * 6;
var _two = (35 + 5) % 7;
var _three = 14 + -4 * 6 / 11;
var _four = (2 + 15) / ((16 * 1) - (7 % 2));
Console.WriteLine(Convert.ToString(_one)+ n+ _two+ n+ _three+ n+ _four+ n);
}
}
}









share|improve this question







New contributor




HELLHOUND0606 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • Take another look at your own code: Convert.ToString(_one). You are only converting _one to a string here, then trying to add the numeric variables to it.
    – Martin Parkin
    Nov 19 at 13:14






  • 1




    Possible duplicate of String Concatenation using '+' operator
    – mjwills
    Nov 19 at 13:16










  • What's the difference if you do not add? What is your problem?
    – SeM
    Nov 19 at 13:20










  • Problem is I didn't understand how C# decides what to do in my last WriteLine. @RobinBennett explained that if that first item is a string C# treats the rest of them as strings. I didn't know that and spent sometime trying to figure out why/how to make it work without conversion, gave up and found out how to convert that _one which visual studio seemed to raise the error on.
    – HELLHOUND0606
    Nov 19 at 13:46















up vote
0
down vote

favorite









up vote
0
down vote

favorite











I don't understand why I am getting a cannot convert to string with _one but not the other 3! Yes, I'm new to programming and loosing my mind trying to figure out why stackoverflow is requiring me to enter more words than I needed to ask my question!



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

namespace diviTwo
{
class Program
{
static void Main(string args)
{
//Print Test Problems
var n = "n";
var one = "-1 + 4 * 6";
var two = "(35 + 5) % 7";
var three = "14 + -4 * 6 / 11";
var four = "2 + 15 / 16 * 1 - 7 % 2";
Console.WriteLine(one+ n+ two+ n+ three+ n+ four+ n);

//Print Results of Test Problems
var _one = -1 + 4 * 6;
var _two = (35 + 5) % 7;
var _three = 14 + -4 * 6 / 11;
var _four = (2 + 15) / ((16 * 1) - (7 % 2));
Console.WriteLine(Convert.ToString(_one)+ n+ _two+ n+ _three+ n+ _four+ n);
}
}
}









share|improve this question







New contributor




HELLHOUND0606 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I don't understand why I am getting a cannot convert to string with _one but not the other 3! Yes, I'm new to programming and loosing my mind trying to figure out why stackoverflow is requiring me to enter more words than I needed to ask my question!



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

namespace diviTwo
{
class Program
{
static void Main(string args)
{
//Print Test Problems
var n = "n";
var one = "-1 + 4 * 6";
var two = "(35 + 5) % 7";
var three = "14 + -4 * 6 / 11";
var four = "2 + 15 / 16 * 1 - 7 % 2";
Console.WriteLine(one+ n+ two+ n+ three+ n+ four+ n);

//Print Results of Test Problems
var _one = -1 + 4 * 6;
var _two = (35 + 5) % 7;
var _three = 14 + -4 * 6 / 11;
var _four = (2 + 15) / ((16 * 1) - (7 % 2));
Console.WriteLine(Convert.ToString(_one)+ n+ _two+ n+ _three+ n+ _four+ n);
}
}
}






c#






share|improve this question







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HELLHOUND0606 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







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Check out our Code of Conduct.









share|improve this question




share|improve this question






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asked Nov 19 at 13:11









HELLHOUND0606

34




34




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HELLHOUND0606 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





HELLHOUND0606 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






HELLHOUND0606 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • Take another look at your own code: Convert.ToString(_one). You are only converting _one to a string here, then trying to add the numeric variables to it.
    – Martin Parkin
    Nov 19 at 13:14






  • 1




    Possible duplicate of String Concatenation using '+' operator
    – mjwills
    Nov 19 at 13:16










  • What's the difference if you do not add? What is your problem?
    – SeM
    Nov 19 at 13:20










  • Problem is I didn't understand how C# decides what to do in my last WriteLine. @RobinBennett explained that if that first item is a string C# treats the rest of them as strings. I didn't know that and spent sometime trying to figure out why/how to make it work without conversion, gave up and found out how to convert that _one which visual studio seemed to raise the error on.
    – HELLHOUND0606
    Nov 19 at 13:46




















  • Take another look at your own code: Convert.ToString(_one). You are only converting _one to a string here, then trying to add the numeric variables to it.
    – Martin Parkin
    Nov 19 at 13:14






  • 1




    Possible duplicate of String Concatenation using '+' operator
    – mjwills
    Nov 19 at 13:16










  • What's the difference if you do not add? What is your problem?
    – SeM
    Nov 19 at 13:20










  • Problem is I didn't understand how C# decides what to do in my last WriteLine. @RobinBennett explained that if that first item is a string C# treats the rest of them as strings. I didn't know that and spent sometime trying to figure out why/how to make it work without conversion, gave up and found out how to convert that _one which visual studio seemed to raise the error on.
    – HELLHOUND0606
    Nov 19 at 13:46


















Take another look at your own code: Convert.ToString(_one). You are only converting _one to a string here, then trying to add the numeric variables to it.
– Martin Parkin
Nov 19 at 13:14




Take another look at your own code: Convert.ToString(_one). You are only converting _one to a string here, then trying to add the numeric variables to it.
– Martin Parkin
Nov 19 at 13:14




1




1




Possible duplicate of String Concatenation using '+' operator
– mjwills
Nov 19 at 13:16




Possible duplicate of String Concatenation using '+' operator
– mjwills
Nov 19 at 13:16












What's the difference if you do not add? What is your problem?
– SeM
Nov 19 at 13:20




What's the difference if you do not add? What is your problem?
– SeM
Nov 19 at 13:20












Problem is I didn't understand how C# decides what to do in my last WriteLine. @RobinBennett explained that if that first item is a string C# treats the rest of them as strings. I didn't know that and spent sometime trying to figure out why/how to make it work without conversion, gave up and found out how to convert that _one which visual studio seemed to raise the error on.
– HELLHOUND0606
Nov 19 at 13:46






Problem is I didn't understand how C# decides what to do in my last WriteLine. @RobinBennett explained that if that first item is a string C# treats the rest of them as strings. I didn't know that and spent sometime trying to figure out why/how to make it work without conversion, gave up and found out how to convert that _one which visual studio seemed to raise the error on.
– HELLHOUND0606
Nov 19 at 13:46














1 Answer
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up vote
1
down vote



accepted










There's nothing special about _one, it's just that if the first item is a string, C# knows that you want to treat everything else as a string and concatenate them. You'd get the same result if you did



Console.WriteLine("Result=" + _one + n + _two + n + _three + n + _four + n);


If you just supplied a list of variables that were all integers, C# would add them up and give you the result. However you start with a number and add a string, so C# doesn't know what to do.






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    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    1
    down vote



    accepted










    There's nothing special about _one, it's just that if the first item is a string, C# knows that you want to treat everything else as a string and concatenate them. You'd get the same result if you did



    Console.WriteLine("Result=" + _one + n + _two + n + _three + n + _four + n);


    If you just supplied a list of variables that were all integers, C# would add them up and give you the result. However you start with a number and add a string, so C# doesn't know what to do.






    share|improve this answer

























      up vote
      1
      down vote



      accepted










      There's nothing special about _one, it's just that if the first item is a string, C# knows that you want to treat everything else as a string and concatenate them. You'd get the same result if you did



      Console.WriteLine("Result=" + _one + n + _two + n + _three + n + _four + n);


      If you just supplied a list of variables that were all integers, C# would add them up and give you the result. However you start with a number and add a string, so C# doesn't know what to do.






      share|improve this answer























        up vote
        1
        down vote



        accepted







        up vote
        1
        down vote



        accepted






        There's nothing special about _one, it's just that if the first item is a string, C# knows that you want to treat everything else as a string and concatenate them. You'd get the same result if you did



        Console.WriteLine("Result=" + _one + n + _two + n + _three + n + _four + n);


        If you just supplied a list of variables that were all integers, C# would add them up and give you the result. However you start with a number and add a string, so C# doesn't know what to do.






        share|improve this answer












        There's nothing special about _one, it's just that if the first item is a string, C# knows that you want to treat everything else as a string and concatenate them. You'd get the same result if you did



        Console.WriteLine("Result=" + _one + n + _two + n + _three + n + _four + n);


        If you just supplied a list of variables that were all integers, C# would add them up and give you the result. However you start with a number and add a string, so C# doesn't know what to do.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 19 at 13:19









        Robin Bennett

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