Discussion :

[Ankain]

Bonjour tout le monde,

je suis débutant en c++, et dans mon stage je dois utiliser des programmes écrits en Fortran. J'ai trouvé des exemples d'appel de fonctions ou subroutines mais j'ai toujours des erreurs au niveau de la compliation !

voici mon code:

fonction main :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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#include <cstdlib>
#include <cstdio>
#include <iostream>
 
extern "C" double fonction_somme_(long *fsize, double* fvec);
extern "C" void sousroutine_somme_(long *fsize, double* fvec, double *fsum);
 
int main()
{
    long i,size;
    double sum;
    double *vec;
 
    size = 5000;
 
    vec = new double[size];
 
    for(i=0;i<size;i++)
    {
        vec[i]=1.1234532;
    }
 
    // Appeler une fonction du fortran
    sum = fonction_somme_(&size,vec);
 
    cout << "Appeler une fonction Fortran" << endl;
    cout << "============================" << endl;
    cout << "size = " << size << endl;
    cout << "sum = " << sum << endl << endl;
 
 
    // Appeler une sous-routine du fortran
    sousroutine_somme_(&size,vec,∑);
 
    cout << "Appeler une sousroutine Fortran" << endl;
    cout << "===============================" << endl;
    cout << "size = " << size << endl;
    cout << "sum = " << sum << endl << endl;
 
}

la fonction et la subroutine écrites en fortran:

Code :

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real*8 function fonction_somme(fsize,fvec)
 
    integer fsize,i
    real*8 fvec(fsize)
    real*8 sum
 
    fonction_somme=0.0
 
    do i=1,fsize
      fonction_somme=fonction_somme+fvec(i)
    end do
 
    return
 
end
 
 
subroutine sousroutine_somme(fsize,fvec,sum)
 
    integer fsize,i
    real*8 fvec(fsize)
    real*8 sum
 
    sum=0.0
 
    do i=1,fsize
      sum=sum+fvec(i)
    end do
 
end

et voilà les erreurs que ça donne :

-------------- Build: Debug in Appel_fction_subrout ---------------

Compiling: fction_subr.f
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:1.1:
real*8 function fonction_somme(fsize,fvec)
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:1.1:
real*8 function fonction_somme(fsize,fvec)
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:3.5:
integer fsize,i
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:3.5:
integer fsize,i
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:4.5:
real*8 fvec(fsize)
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:4.5:
real*8 fvec(fsize)
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:5.5:
real*8 sum
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:5.5:
real*8 sum
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:7.5:
fonction_somme=0.0
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:9.5:
do i=1,fsize
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:9.5:
do i=1,fsize
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:11.5:
end do
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:11.5:
end do
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:13.5:
return
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:13.5:
return
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:15.1:
end
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:15.1:
end
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:18.1:
subroutine sousroutine_somme(fsize,fvec,sum)
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:18.1:
subroutine sousroutine_somme(fsize,fvec,sum)
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:20.5:
integer fsize,i
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:20.5:
integer fsize,i
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:21.5:
real*8 fvec(fsize)
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:21.5:
real*8 fvec(fsize)
1
Error: Unclassifiable statement at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:22.5:
real*8 sum
1
Error: Non-numeric character in statement label at (1)
C:\Users\Anas\codeblocks_proj\Appel_fction_subrout\fction_subr.f:22.5:
real*8 sum
1
Error: Unclassifiable statement at (1)
Fatal Error: Error count reached limit of 25.
Process terminated with status 1 (0 minutes, 3 seconds)
0 errors, 0 warnings (0 minutes, 3 seconds)

Merci

[Ekleog]

Au vu des messages d'erreur, c'est un problème dans le code fortran.

Je n'ai jamais utilisé ce langage, mais le compilateur fortran semble t'annoncer qu'il s'attend à un nombre à la place de "real*8".