Typing CO_2 easily












0















I'm writing my dissertation and that involves typing a lot of $mathrm{CO_2}$. I'd like to make a macro for it that's a lot easier to type, but if I put newcommand{co2}{mathrm{CO_2}}, for example, it gives me the error that mathrm can only be used in math mode. But using newcommand{co2}{$mathrm{CO_2}$} doesn't work either.



Is there a way for me to make a macro that makes typing CO_2 easier, even if it doesn't use mathrm?










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  • Welcome to TeX.SE! Can you show a short compilable tex code resulting in your issue?

    – Kurt
    1 hour ago











  • Have you tried newcommand{cotwo}{mathrm{CO_2}} see tex.stackexchange.com/questions/44545/… also tex.stackexchange.com/questions/393855/…

    – KJO
    1 hour ago


















0















I'm writing my dissertation and that involves typing a lot of $mathrm{CO_2}$. I'd like to make a macro for it that's a lot easier to type, but if I put newcommand{co2}{mathrm{CO_2}}, for example, it gives me the error that mathrm can only be used in math mode. But using newcommand{co2}{$mathrm{CO_2}$} doesn't work either.



Is there a way for me to make a macro that makes typing CO_2 easier, even if it doesn't use mathrm?










share|improve this question









New contributor




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





















  • Welcome to TeX.SE! Can you show a short compilable tex code resulting in your issue?

    – Kurt
    1 hour ago











  • Have you tried newcommand{cotwo}{mathrm{CO_2}} see tex.stackexchange.com/questions/44545/… also tex.stackexchange.com/questions/393855/…

    – KJO
    1 hour ago
















0












0








0








I'm writing my dissertation and that involves typing a lot of $mathrm{CO_2}$. I'd like to make a macro for it that's a lot easier to type, but if I put newcommand{co2}{mathrm{CO_2}}, for example, it gives me the error that mathrm can only be used in math mode. But using newcommand{co2}{$mathrm{CO_2}$} doesn't work either.



Is there a way for me to make a macro that makes typing CO_2 easier, even if it doesn't use mathrm?










share|improve this question









New contributor




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












I'm writing my dissertation and that involves typing a lot of $mathrm{CO_2}$. I'd like to make a macro for it that's a lot easier to type, but if I put newcommand{co2}{mathrm{CO_2}}, for example, it gives me the error that mathrm can only be used in math mode. But using newcommand{co2}{$mathrm{CO_2}$} doesn't work either.



Is there a way for me to make a macro that makes typing CO_2 easier, even if it doesn't use mathrm?







macros






share|improve this question









New contributor




Hayley 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









New contributor




Hayley 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




share|improve this question








edited 2 hours ago









Kurt

39.7k850164




39.7k850164






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asked 2 hours ago









HayleyHayley

1




1




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





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






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













  • Welcome to TeX.SE! Can you show a short compilable tex code resulting in your issue?

    – Kurt
    1 hour ago











  • Have you tried newcommand{cotwo}{mathrm{CO_2}} see tex.stackexchange.com/questions/44545/… also tex.stackexchange.com/questions/393855/…

    – KJO
    1 hour ago





















  • Welcome to TeX.SE! Can you show a short compilable tex code resulting in your issue?

    – Kurt
    1 hour ago











  • Have you tried newcommand{cotwo}{mathrm{CO_2}} see tex.stackexchange.com/questions/44545/… also tex.stackexchange.com/questions/393855/…

    – KJO
    1 hour ago



















Welcome to TeX.SE! Can you show a short compilable tex code resulting in your issue?

– Kurt
1 hour ago





Welcome to TeX.SE! Can you show a short compilable tex code resulting in your issue?

– Kurt
1 hour ago













Have you tried newcommand{cotwo}{mathrm{CO_2}} see tex.stackexchange.com/questions/44545/… also tex.stackexchange.com/questions/393855/…

– KJO
1 hour ago







Have you tried newcommand{cotwo}{mathrm{CO_2}} see tex.stackexchange.com/questions/44545/… also tex.stackexchange.com/questions/393855/…

– KJO
1 hour ago












2 Answers
2






active

oldest

votes


















2














You want easy?



documentclass{article}  
usepackage{chemformula}
begin{document}
ch{CO2}
end{document}





share|improve this answer
























  • Indeed, very easy. +1

    – marmot
    17 mins ago



















1














documentclass[a4paper]{article}

makeatletter
newcommandUD@exchange[2]{#2#1}%
newcommandname{}%
longdefname#1#{romannumeral0@name{#1}}%
newcommand@name[2]{%
expandafterUD@exchangeexpandafter{csname#2endcsname}{ #1}%
}%
makeatother

% Variant 1: Via csname..endcsname define a macro whose name is CO_2

namenewcommand{CO_2}{$mathrm{CO_2}$}%

% Variant 2: Define a macro CO which as parameter text has the delimiter _2

newcommandCO{}%
defCO_2{$mathrm{CO_2}$}%

begin{document}

name{CO_2}

CO_2

end{document}


enter image description here



(I elaborated on the name-macro in my answer to the question "How to implement expandbefore, similarly to expandafter?".)






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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    2














    You want easy?



    documentclass{article}  
    usepackage{chemformula}
    begin{document}
    ch{CO2}
    end{document}





    share|improve this answer
























    • Indeed, very easy. +1

      – marmot
      17 mins ago
















    2














    You want easy?



    documentclass{article}  
    usepackage{chemformula}
    begin{document}
    ch{CO2}
    end{document}





    share|improve this answer
























    • Indeed, very easy. +1

      – marmot
      17 mins ago














    2












    2








    2







    You want easy?



    documentclass{article}  
    usepackage{chemformula}
    begin{document}
    ch{CO2}
    end{document}





    share|improve this answer













    You want easy?



    documentclass{article}  
    usepackage{chemformula}
    begin{document}
    ch{CO2}
    end{document}






    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 49 mins ago









    John KormyloJohn Kormylo

    45.4k12570




    45.4k12570













    • Indeed, very easy. +1

      – marmot
      17 mins ago



















    • Indeed, very easy. +1

      – marmot
      17 mins ago

















    Indeed, very easy. +1

    – marmot
    17 mins ago





    Indeed, very easy. +1

    – marmot
    17 mins ago











    1














    documentclass[a4paper]{article}

    makeatletter
    newcommandUD@exchange[2]{#2#1}%
    newcommandname{}%
    longdefname#1#{romannumeral0@name{#1}}%
    newcommand@name[2]{%
    expandafterUD@exchangeexpandafter{csname#2endcsname}{ #1}%
    }%
    makeatother

    % Variant 1: Via csname..endcsname define a macro whose name is CO_2

    namenewcommand{CO_2}{$mathrm{CO_2}$}%

    % Variant 2: Define a macro CO which as parameter text has the delimiter _2

    newcommandCO{}%
    defCO_2{$mathrm{CO_2}$}%

    begin{document}

    name{CO_2}

    CO_2

    end{document}


    enter image description here



    (I elaborated on the name-macro in my answer to the question "How to implement expandbefore, similarly to expandafter?".)






    share|improve this answer




























      1














      documentclass[a4paper]{article}

      makeatletter
      newcommandUD@exchange[2]{#2#1}%
      newcommandname{}%
      longdefname#1#{romannumeral0@name{#1}}%
      newcommand@name[2]{%
      expandafterUD@exchangeexpandafter{csname#2endcsname}{ #1}%
      }%
      makeatother

      % Variant 1: Via csname..endcsname define a macro whose name is CO_2

      namenewcommand{CO_2}{$mathrm{CO_2}$}%

      % Variant 2: Define a macro CO which as parameter text has the delimiter _2

      newcommandCO{}%
      defCO_2{$mathrm{CO_2}$}%

      begin{document}

      name{CO_2}

      CO_2

      end{document}


      enter image description here



      (I elaborated on the name-macro in my answer to the question "How to implement expandbefore, similarly to expandafter?".)






      share|improve this answer


























        1












        1








        1







        documentclass[a4paper]{article}

        makeatletter
        newcommandUD@exchange[2]{#2#1}%
        newcommandname{}%
        longdefname#1#{romannumeral0@name{#1}}%
        newcommand@name[2]{%
        expandafterUD@exchangeexpandafter{csname#2endcsname}{ #1}%
        }%
        makeatother

        % Variant 1: Via csname..endcsname define a macro whose name is CO_2

        namenewcommand{CO_2}{$mathrm{CO_2}$}%

        % Variant 2: Define a macro CO which as parameter text has the delimiter _2

        newcommandCO{}%
        defCO_2{$mathrm{CO_2}$}%

        begin{document}

        name{CO_2}

        CO_2

        end{document}


        enter image description here



        (I elaborated on the name-macro in my answer to the question "How to implement expandbefore, similarly to expandafter?".)






        share|improve this answer













        documentclass[a4paper]{article}

        makeatletter
        newcommandUD@exchange[2]{#2#1}%
        newcommandname{}%
        longdefname#1#{romannumeral0@name{#1}}%
        newcommand@name[2]{%
        expandafterUD@exchangeexpandafter{csname#2endcsname}{ #1}%
        }%
        makeatother

        % Variant 1: Via csname..endcsname define a macro whose name is CO_2

        namenewcommand{CO_2}{$mathrm{CO_2}$}%

        % Variant 2: Define a macro CO which as parameter text has the delimiter _2

        newcommandCO{}%
        defCO_2{$mathrm{CO_2}$}%

        begin{document}

        name{CO_2}

        CO_2

        end{document}


        enter image description here



        (I elaborated on the name-macro in my answer to the question "How to implement expandbefore, similarly to expandafter?".)







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 52 mins ago









        Ulrich DiezUlrich Diez

        5,470619




        5,470619






















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