Désolé je me suis trompé.
Voici le bon:
#include <stdio.h>
#include <malloc.h>
typedef struct {double *v; int dim;} matrix;
void destruct(matrix m)
{
free(m.v);
}
void create(matrix *m, int dim)
{
m->dim= dim;
m->v= (double *)calloc(dim * dim, sizeof(double));
}
double getVal(matrix m, int x, int y)
{
if( x >= m.dim )
{
printf("%d is an invalid x index to get value (dim=%d)\n", x, m.dim);
return 0.0;
}
if( y >= m.dim )
{
printf("%d is an invalid y index to get value (dim=%d)\n", y, m.dim);
return 0.0;
}
return m.v[(m.dim * y) + x];
}
void printM(matrix m)
{
int i, j;
printf("\n---------------\nmat:\n");
for(i=0; i < m.dim; i++)
{
for(j=0; j < m.dim; j++)
printf("%f\t", getVal(m, i, j));
printf("\n");
}
printf("---------------\n\n");
}
void setVal(matrix m, int x, int y, double v)
{
if( x >= m.dim )
{
printf("%d is an invalid x index to set value (dim=%d)\n", x, m.dim);
return;
}
if( y >= m.dim )
{
printf("%d is an invalid y index to set value (dim=%d)\n", y, m.dim);
return;
}
m.v[(m.dim * y) + x]= v;
}
double getSignatureDim(int i)
{
return ( i % 2 )?-1.0:1.0;
}
double getSignature(int x, int y)
{
return getSignatureDim(x) * getSignatureDim(y);
}
matrix extract(matrix m, int x, int y)
{
matrix res;
int i, j, k, l, dim= m.dim;
create(&res, dim - 1);
for(j= l= 0; j < dim; j++)
{
for(i= k= 0; i < dim; i++)
{
if( (i != x) && (j != y) )
setVal(res, k, l, getVal(m, i, j));
if( i != x )
k++;
}
if( j != y )
l++;
}
return res;
}
double getDet(matrix m)
{
int dim= m.dim;
if( !dim )
{
printf("It's an empty matrix\n");
return 0.0;
}
if( dim == 1 )
return *m.v;
else
{
int i, j;
double res= 0.0;
for(i= 0; i < dim; i++)
{
matrix a= extract(m, i, 0);
res+= getVal(m, i, 0) * getSignatureDim(i) * getDet(a);
destruct(a);
}
return res;
}
}
matrix transpose(matrix m)
{
int dim= m.dim;
if( dim > 1 )
{
int i, j;
double tmp;
for(j= 0; j < dim; j++)
for(i= j + 1; i < dim; i++)
{
tmp= getVal(m, i, j);
setVal(m, i, j, getVal(m, j, i));
setVal(m, j, i, tmp);
}
}
return m;
}
matrix inverse(matrix m)
{
matrix res= {0};
int dim= m.dim;
create(&res, dim);
if( dim == 1 )
setVal(res, 0, 0, 1.0 / getVal(m, 0, 0));
else
{
int i, j;
double det= getDet(m);
if( !det )
{
printf("This matrix is not inversable\n");
return res;
}
for(j= 0; j < dim; j++)
for(i= 0; i < dim; i++)
{
matrix a= extract(m, i, j);
setVal(res, i, j, getSignature(i, j) * getDet(a) / det);
destruct(a);
}
}
return transpose(res);
}
int main()
{
matrix m;
create(&m, 2);
setVal(m, 0, 0, 1.0);
setVal(m, 0, 1, 2.0);
setVal(m, 1, 0, 3.0);
setVal(m, 1, 1, 4.0);
printf("%f\t", getVal(m, 0, 0));
printf("%f\n", getVal(m, 0, 1));
printf("%f\t", getVal(m, 1, 0));
printf("%f\n", getVal(m, 1, 1));
printf("det:%f\n", getDet(m));
printf("\n");
m= inverse(m);
printf("%f\t", getVal(m, 0, 0));
printf("%f\n", getVal(m, 0, 1));
printf("%f\t", getVal(m, 1, 0));
printf("%f\n", getVal(m, 1, 1));
return 0;
}
Core Breaker 
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Réponse au message :
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> Aidez nous please c pr programmer en langage
Votre texte ICIC l inverse de la matrice dynamique merci bcp !!!!!!