XanaProg.c

#include <stdio.h>
#include <stdlib.h>

#define TRUE 1

struct tagCar {
    int cilindrada;
    int co2lvl;
    int age;
    float imp;
};

int Valid(int num, int inf, int sup);
float ImpostoCilindrada(int cm);
float ImpostoCo2(int co2);
float Discount(int age, float imp);
void ShowFinal(struct tagCar car);

int main()
{
    struct tagCar car;
    int cmaux, ageaux, co2aux;
    float disc;
    disc = 0,0;
    car.imp = 0;
    cmaux = ageaux = co2aux = 0;


    printf("Indique a Cilindrada: ");
    scanf("%d", &cmaux);
    printf("Indique a Idade: ");
    scanf("%d", &ageaux);
    printf("Indique a quantidade de CO2: ");
    scanf("%d", &co2aux);

    if( Valid(cmaux, 0, -1) && Valid(ageaux, 0, -1) && Valid(co2aux, 0, -1) ) {
        system("cls");

        car.age = ageaux;
        car.cilindrada = cmaux;
        car.co2lvl = co2aux;

        car.imp = ImpostoCilindrada(car.cilindrada);
        car.imp += ImpostoCo2(car.co2lvl);
        disc = Discount(car.age, car.imp);
        car.imp -= disc;

        ShowFinal(car);
    }

    return 0;
}

int Valid(int num, int inf, int sup) {
    int aux;
    if( sup == -1 )
        return (num >= inf) ? 1:0;

    return (num >= inf && num <= sup) ? 1:0;
}

float ImpostoCilindrada(int cm) {
    float imp, aux;
    imp = 670,00;

    if( cm > 1250 && cm < 12250) {
        aux = cm - 1250;
        aux *= 4,25;
        imp += aux;
    }
    else    if( cm >= 12250 ) {
        aux = 12250 - 1250;
        aux *= 0,90;
        imp += aux;
    }

    return imp;
}
float ImpostoCo2(int co2) {
    float imp;
    imp = 0,00;

    if( co2 <= 105 ) {
        imp = (float) co2*15,00;
        imp -= 1100,00;
    }
    else    if( co2 <= 130 ) {
        imp = (float) co2*55,00;
        imp -= 5300,00;
    }
    else    if( co2 <= 150 ) {
        imp = (float) co2*105,00;
        imp -= 11800,00;
    }
    else {
        imp = (float) co2*122,00;
        imp -= 14350,00;
    }

    return (imp > 0) ? imp:0;
}
float Discount(int age, float imp) {
    float disc;

    if( age <= 1 )
        disc = (imp * 10) / 100;
    else    if( age <= 2 )
        disc = (imp * 20) / 100;
    else    if( age <= 3 )
        disc = (imp * 28) / 100;
    else    if( age <= 4 )
        disc = (imp * 35) / 100;
    else    if( age <= 5 )
        disc = (imp * 43) / 100;
    else    if( age <= 6 )
        disc = (imp * 52) / 100;
    else    if( age <= 7 )
        disc = (imp * 60) / 100;
    else    if( age <= 8 )
        disc = (imp * 65) / 100;
    else    if( age <= 9 )
        disc = (imp * 70) / 100;
    else
        disc = (imp * 75) / 100;

    return disc;
}
void ShowFinal(struct tagCar car) {
    printf("\n\t[Carro]\n");
    printf("\n\t\tCilindrada: %d", car.cilindrada);
    printf("\n\t\tNivel CO2: %d", car.co2lvl);
    printf("\n\t\tIdade: %d", car.age);
    printf("\n\n\t\t\tTaxas a pagar: %f\n\n\n", car.imp);
}