Thread: Please help with simulation of a parking machine meter

Hi,
Please I need help writing a C program that simulates a parking machine meter.
The instructions are on the following link:
http://cop2270.mlahlou.info/files/HW4S13.pdf

My problem is that when "printing the receipt", under the Garage Location I get a number (from 1 to 3). How can I make it print valet parking, garage parking and economy parking (as the example) for each case?

Thank you in advance

so far I have this:

Code:

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


int main (void)
{

int opt = 0, h = 0, m = 0;
float pay = 0;


FILE*data;
data = fopen ("parking_receipt.txt","w");

void print()
{
fprintf(data, "\nRECEIPT\n\n \nGarage Location \t\tAmount of Time \t\t\tTotal Due"
"\n%d \t\t%dh %dmin \t\t%.2f", opt, h, m, pay);
}


do{
system("cls");
printf("\nWELLCOME TO THE MIAMI INTERNATIONAL AIRPORT\n\n");
printf("We offer you the following parking options:\n\n");
printf("1. Valet Parking\n");
printf("2. Garage Parking\n");
printf("3. Economy Parking\n");
printf("4. Print Receipt and/or Exit\n");
printf("\nPlease select your parking option:");
scanf("%d", &opt);

switch(opt)
{
case 1:

system("cls");
printf("\nValet Parking\n\n");
printf("\nRates:\n");
printf("\t\t0 - 3 hours: $18.00");
printf("\n\t\t3 - 24 hours: $30.00");
printf("\n\t\tmax $30.00/day");
printf("\n\nPlease enter the amount of hours that you're going to stay:");
scanf("%d%d", &h, &m);



if(h <= 3)
{
pay = 18;
printf("%.2f\n", pay);
print();

}
else
{
if(h > 3, h <= 24)
{
pay = 30;
printf("%.2f\n", pay);
print();

}
}

getch();
break;
case 2:
system("cls");
printf("\nGarage Parking\n\n");
printf("\nRates:\n");
printf("\t\tEvery 20 min: $2.00");
printf("\n\t\tmax $17.00/day");
printf("\n\nmaximun rate applies after 160 min");
printf("\n\nPlease enter the amount of hours and min that you're going to stay:");
scanf("%d%d", &h, &m);

if(h <= 2, m < 60, ((h*60) + m) <= 160)
{
pay = (h*6) + (m*.1);
printf("%.2f\n", pay);
print();

}
else
{
if(h > 2, m < 60, (h*60) + m > 160)
{
pay = 17;
printf("%.2f\n", pay);
print();

}
}

getch();
break;
case 3:
system("cls");
printf("\nEconomy Parking\n\n");
printf("\nRates:\n");
printf("\t\t0 - 3 hours: $3.00/hour");
printf("\n\t\tmax $8.00/day");
printf("\n\nmaximun rate applies after 160 min");
printf("\n\nPlease enter the amount of hours and min that you're going to stay:");
scanf("%d%d", &h, &m);

if(h <= 3, m < 60,((h*60) + m) < 160 )
{
pay = (h*3) + (m*.05);
printf("%.2f\n", pay);
print();

}
else
{
if(h > 3, m > 160,((h*60) + m) > 160 )
{
pay = 8;
printf("%.2f\n", pay);
print();

}
}

getch();
break;

}
}while(opt !=4);



fclose(data);

return 0;
}

You've declared a function inside a function. Some languages allow that, but not C. The print() function must be moved outside main().

Code:

void print(int opt, int h, int m, float pay)
{
    fprintf(data, "\nRECEIPT\n\n \nGarage Location \t\tAmount of Time \t\t\tTotal Due"
            "\n%d \t\t%dh %dmin \t\t%.2f", opt, h, m, pay);
}


int main(int argc, char *argv[])
{
    int opt = 0, h = 0, m = 0;
    float pay = 0;

    FILE *data = fopen("parking_receipt.txt","w");

    print(opt,h,m,pay);
...

Also, please use [code][/code] tags.

Ok, I see the receipt printing function.
Admittedly, I didn't read it very closely due to the lack of indentation.

Just declare and initialize the pointers:

Code:

char *garage_location[] = { "valet parking", "garage parking", "economy parking" };

and use them like this:

Code:

    fprintf(data, "\nRECEIPT\n\n \nGarage Location \t\tAmount of Time \t\t\tTotal Due"
            "\n%s \t\t%dh %dmin \t\t%.2f", garage_location[opt-1], h, m, pay);

Notice this uses %s for the string.

Thanks guys for your help I got it now. your the best!!