Temp C

___Après déclaration___
Degré: 4
0
0
0
0
___Après passage en argument___
Degré: 4
0
0
0
0
___Dans le main après dérivée___
Degré: 3
0
0
0
0
[Finished in 0.0s]

#include <stdio.h>

#define N 100

typedef struct {
    int degree;
    float coeff[N+1];
} polynomial;

polynomial derivative(polynomial pol)
{
    int i;
    printf("Degré: %d\n", pol.degree);
    printf("%d\n", pol.coeff[0]);
    printf("%d\n", pol.coeff[1]);
    printf("%d\n", pol.coeff[2]);
    printf("%d\n", pol.coeff[3]);
    printf("_______\n");
    for (i=1; i<=pol.degree; i++)
    {
        //i parcourt les degrés du poly de 1 à N
        //coeff[i] le coeff du membre de degré i
        pol.coeff[i-1] = pol.coeff[i] * i;
        // 4*x^2 ==> 8*x^1
    }
    pol.coeff[pol.degree] = 0;
    pol.degree--;
    return pol;
}

int main(int argc, char const *argv[])
{
    polynomial pol = {4, {1,2,3,4}};
    printf("___Après déclaration___\n");
    printf("Degré: %d\n", pol.degree);
    printf("%d\n", pol.coeff[0]);
    printf("%d\n", pol.coeff[1]);
    printf("%d\n", pol.coeff[2]);
    printf("%d\n", pol.coeff[3]);

    pol = derivative(pol);
    printf("___Dans le main après dérivée___\n");
    printf("Degré: %d\n", pol.degree);
    printf("%d\n", pol.coeff[0]);
    printf("%d\n", pol.coeff[1]);
    printf("%d\n", pol.coeff[2]);
    printf("%d\n", pol.coeff[3]);
    return 0;
}