Checkout cost of taxi

Tuesday, June 29, 2010

// C08_Ex 7: Checkout cost of taxi from kilometer input. Known:
// First km: 5$
// 2 -> 5 km price: 4$
// 6 km -> price:  3$
// If > 120km , will sale 10%

#include <stdio.h>
#define G1 5
#define G2 4
#define G3 3

void main()
{
    int n;
    float cost;
    printf("Input numbers of km (>0): ");
    scanf("%d", &n);

    if (n == 1)
        cost = G1;
    else
    {
        if (n >= 2 && n <= 5)
            cost = G1 + (n - 1)*G2;
        else
            cost = G1 + 4*G2 + (n - 1 - 4)*G3;
    }

    if (n > 120)
        cost = cost * 0.9;

    printf("=> Total cost: %.2f $\n", cost);
}