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|                                  Exercice 1                          |
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#include <stdio.h>

#define EN_PARALLELE 1
#define EN_SERIE 0

int main() {
    float R1, R2, R3;
    int typeDeMontage;

    printf("Donner la valeur de R1 >>:");
    scanf("%f", &R1);
    printf("Donner la valeur de R2 >>:");
    scanf("%f", &R2);
    printf("Donner la valeur de R3 >>:");
    scanf("%f", &R3);

    printf("Quel est le type de montage utilise?\n");
    printf("0: Montage en serie\n");
    printf("1: Montage en parallele\n");

    do {
        printf(">>:");
        scanf("%d", &typeDeMontage);
    } while (typeDeMontage != 0 && typeDeMontage != 1);

    printf("La resistance equivalente est : ");

    if (typeDeMontage == EN_SERIE) {
        printf("%.3f", R1 + R2 + R3);
    } else if (typeDeMontage == EN_PARALLELE) {
        printf("%.3f", (R1 * R2 * R3) / (R1 * R2 + R1 * R3 + R2 * R3));
    }

}