Re: [Dev-C++] strcmp

[Fernando L. <fer...@gm...>]

Yohaan,

Function strcmp applies to null terminated char arrays, strings are a C++
data type.

Replace

 if (strcmp (noble,helium.aname)=3D=3D0) {

with

if (noble.compare (helium.aname)=3D=3D0) {

Best regards,

Fernando

On 7/8/07, J Hall <jsh...@ho...> wrote:
>
>   i cant figure out how to use the strcmp to compare the string noble to
> the object helium with the member string name...??!!
>
> this is the error that is stopping the compiler...
>
> 44 C:\Dev-Cpp\Untitled1.cpp no matching function for call to
> `strcmp(std::string&, std::string&)'
>
> #include <stdio.h>
> #include <iostream>
> #include <string.h>
> #include <cstring>
>
> using namespace std;
> struct elements{
>        string aname;
>        int atomic_no;
>        float atomic_weight;
>        }helium, neon, argon, krypton, xenon, radon;
>
> int x;
> main()
> {helium.aname =3D "helium";
>      helium.atomic_no =3D 2;
>      helium.atomic_weight =3D 4;
>      neon.aname =3D "neon";
>      neon.atomic_no =3D 10;
>      neon.atomic_weight =3D 20.1797;
>      argon.aname =3D "argon";
>      argon.atomic_no =3D 18;
>      argon.atomic_weight =3D 39.948;
>      krypton.aname =3D "krypton";
>      krypton.atomic_no =3D 36;
>      krypton.atomic_weight =3D 83.80;
>      xenon.aname =3D "xenon";
>      xenon.atomic_no =3D 54;
>      xenon.atomic_weight =3D 131.29;
>      radon.aname =3D "radon";
>      radon.atomic_no =3D  86;
>      radon.atomic_weight =3D 222.0176;
>
>  string noble;
>  string title("\n\t You have selected :\t");
>  string no("\n\t The atomic number for ");
>  string is(" is:\t");
>  string wgt("\n\t The atomic weight is:\t");
> printf ("\t The Begining of the Periodic Table of the Elements \n");
> printf ("\t In the hopes of learning C programming and elemental values.
> \n\n\n");
>
> cout << "\t Please enter a Noble Gas you would like to examine." ;
> cin >> noble;
>  if (strcmp (noble,helium.aname)=3D=3D0) {
>             cout << title << helium.aname;
>             cout << no << helium.aname << is << helium.atomic_no;
>             cout << wgt << helium.atomic_weight;};
>       cin >> x;
>
> }
>
>
> this is what i have got so far...
>
> any help would be appreciated
>
> thanks
>  yohaan
>
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Fernando Lichtschein
li...@fi...