## Kirbyzdashiznit -3

Write a C program in to calculate the parking fare for customers who park
their cars in a parking lot when the following information
is given:
A. A character showing the type of vehicle : C for car, B for bus,
T for truck.
B. An integer between 0 and 24 showing the hour the vehicle entered
the lot.
C. An integer between 0 and 60 showing the minute the vehicle entered
the lot.
D. An integer between 0 and 24 showing the hour the vehicle entered
the lot.
E. An integer between 0 and 60 showing the minute the vehicle left
the lot.

Different rates for each type of vechicle, as shown:
Car : \$0.00/hr first 3 hr \$1.50/hr after 3 hr
Truck : \$1.00/hr first 2 hr \$2.30/hr after 2 hr
BUS : \$2.00/hr first hr \$3.70/hr after 1 hr

No vehicle is allowed to stay in the parking lot later than midnight;
it will be towed away.

Then print the parking lot charge.

PLS HELP ME OUT HERE

When I run it I get long negative numbers

/

``````/ Project3.cpp : Defines the entry point for the console application.
//

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

void getData(int* ehour, int* emin, int* exhour, int* exmin);
void rate(int exhour, int exmin, int ehour, int emin, int* thour, int* tmin, int* round);
int charge(char* vehic, float* rate1, float* rate2, int ehour);
void result(int exhour, int exmin, int ehour, int emin, int thour, int round, float total);

int main(void)
{
char vehic;
int ehour;
int emin;
int exhour;
int exmin;
int thour;
int tmin;
int round;

float rate1;
float rate2;
float total;

getData(&ehour, &emin, &exhour, &exmin);
rate(exhour, exmin, ehour, emin, &thour, &tmin, &round);
charge(&vehic, &rate1, &rate2, ehour);
total= rate1 + rate2;
result( exhour, exmin, ehour, emin, thour, round, total);

return 0;
}

void getData(int* ehour, int* emin, int* exhour, int* exmin)
{
char v;

printf("Enter C for car, B for bus, T for truck: ");
scanf("%c", &v);
printf("\nHour vehicle entered 0-24: ");
scanf("%d", &ehour);
printf("\nMinute vehicle entered 0-60: ");
scanf("%d", &emin);
printf("\nHour vehicle exited 0-24: ");
scanf("%d", &exhour);
printf("\nMinute vehicle exited 0-60: ");
scanf("%d", &exmin);
return;
}
void rate(int exhour, int exmin, int ehour, int emin, int* thour, int* tmin, int* round)
{
if(emin < exmin)
{
emin= emin + 60;
exhour= exhour - 1;
}
*thour = ehour - exhour;
*tmin = emin - exmin;
if ((*tmin > 0 && *tmin <= 60))
{
*thour = *thour + 1;
*round = *tmin * 0;
}
return;
}
int charge(char* vehic, float* rate1, float* rate2, int ehour)
{
switch (*vehic)
{
case 'c': if (ehour <= 3)
{
*rate1 = 0.00;
if (ehour > 3)
*rate2 = 1.50 * (ehour - 3);
}
break;

case 't': if (ehour <= 2)
{
*rate1 = 1.00 * ehour;
if (ehour > 2)
*rate2 = 2.30 * (ehour - 2);
}
break;
case 'b': if (ehour <= 1)
{
*rate1 = 2.00 * ehour;
if (ehour > 1)
*rate2 = 3.70 * (ehour - 1);
}
break;
}
return 0;
}
void result(int exhour, int exmin, int ehour, int emin, int thour, int round, float total)
{
printf("\n\t\t PARKING LOT CHARGE \t\t\n");
printf("\nType of vehicle: Car or Bus or Truck");
printf("\nTIME-IN\t\t %d:%d", ehour, emin);
printf("\nTIME-OUT\t\t %d:%d", exhour, exmin);
printf("\n\t\t\t --------");
printf("\nPARKING TIME\t\t %d:%d", thour, round);
printf("\n\t\t\t --------");
printf("\nTOTAL CHARGE\t\t %4.2f", total);

return;
}``````

## WaltP 2,905

Print out your values in `main()` between your function calls. See where the values become bad.

## Kirbyzdashiznit -3

This is my updated code

``````// Project3.cpp : Defines the entry point for the console application.
//

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

void getData(char* vehic, int* ehour, int* emin, int* exhour, int* exmin);
void rate(int exhour, int exmin, int ehour, int emin, int* thour, int* tmin, int* round);
void charge(char vehic, float* rate1, float* rate2, int ehour);
void result(int exhour, int exmin, int ehour, int emin, int thour, float rate1, float rate2, int round, float total);

int main(void)
{
char vehic;
int ehour;
int emin;
int exhour;
int exmin;
int thour;
int tmin;
int round;

float rate1;
float rate2;
float total;

getData(&vehic, &ehour, &emin, &exhour, &exmin);
rate(exhour, exmin, ehour, emin, &thour, &tmin, &round);
charge(vehic, &rate1, &rate2, ehour);
total= rate1 + rate2;
result( exhour, exmin, ehour, emin, thour, rate1, rate2, round, total);

return 0;
}

void getData(char* vehic, int* ehour, int* emin, int* exhour, int* exmin)
{
printf("Enter C for car, B for bus, T for truck: ");
scanf("%c", &*vehic);
printf("\nHour vehicle entered 0-23: ");
scanf("%d", &*ehour);
printf("\nMinute vehicle entered 0-59: ");
scanf("%d", &*emin);
printf("\nHour vehicle exited 0-23: ");
scanf("%d", &*exhour);
printf("\nMinute vehicle exited 0-59: ");
scanf("%d", &*exmin);
return;
}
void rate(int exhour, int exmin, int ehour, int emin, int* thour, int* tmin, int* round)
{
if(emin < exmin)
{
emin= emin + 60;
exhour= exhour - 1;
}
*thour = ehour - exhour;
*tmin = emin - exmin;
if ((*tmin > 0 && *tmin <= 60))
{
*thour = *thour + 1;
*round = *tmin * 0;
}
return;
}
void charge(char vehic, float* rate1, float* rate2, int ehour)
{
switch (vehic)
{
case 'C': if (ehour <= 3)
{
*rate1 = 0.00 * ehour;
}
else
{
*rate2 = 1.50 * ehour;
}

case 'T': if (ehour <= 2)
{
*rate1 = 1.00 * ehour;
}
else
{
*rate2 = 2.30 * ehour;
}
case 'B': if (ehour <= 1)
{
*rate1 = 2.00 * ehour;
}
else
{
*rate2 = 3.70 * ehour;
}
}
return;
}
void result(int exhour, int exmin, int ehour, int emin, int thour, float rate1, float rate2, int round, float total)
{
printf("\n\t\t PARKING LOT CHARGE \t\t\n");
printf("\nType of vehicle: Car or Bus or Truck");
printf("\nTIME-IN\t\t\t %2d:%2d", ehour, emin);
printf("\nTIME-OUT\t\t %2d:%2d", exhour, exmin);
printf("\n\t\t\t --------");
printf("\nPARKING TIME\t\t %2d:%2d", thour, round);
printf("\n\t\t\t --------");
printf("\nTOTAL CHARGE\t\t %4.2f\n\n", total);

return;
}``````

## WaltP 2,905

This is my updated code

Good. Problem fixed I take it?

## chrjs 42

In your scanf statements, you are dereferencing a pointer and then referencing that, which basically does nothing. You pass pointers into getDate, so you don't need to dereference of reference anything, you can just write it like

``scanf("%c", vehic);``