Program to calculate charge for parked cars

This is the program

A parking garage charges $2 for minimum fee to park up to 3 hours and then a $.50 per hour charge after the 3rd hour. The maximum charge for any 24 hour parking is $10. Assume no car parks longer than 24 hrs, write a program that calculates and prints the parking charge for each of 3 customer. Result should be printed in tabular format. Hint: use function called calculateCHarge to determine charge for each customer

Code:

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#include <stdio.h>

minfee = 2;

int main()
{
        int car1,car2,car3,hour,hour2,hour3,charge1,charge2,charge3,
                totalhour,totalcharge,minfee;

        printf("Enter car number\n");
        scanf("%d", &car1);

        printf("How many hour did the car park\n");
        scanf("%d", &hour);

        if (hour>=3) {
                charge1 = (minfee+hour*.50); }

        else {
                charge1 = 2.00; }

        printf("Enter car number\n");
        scanf("%d", &car2);

        printf("How many hour did the car park\n");
        scanf("%d", &hour2);

        if (hour>=3) {
                charge2 = (minfee+hour*.50); }

        else {
                charge2 = 2.00; }

        printf("Enter car number\n");
        scanf("%d", &car3);

        printf("How many hour did the car park\n");
        scanf("%d", &hour3);

        if (hour>=3) {
                charge3 = (minfee+hour*.50); }

        else {
                charge3 = 2.00; }

        totalhour=(hour+hour2=hour3);
        printf("%d", totalhour);

        totalcharge=(charge1+charge2+charge3);
        printf("%d", totalcharge);

return 0;

}

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Heres how output should be

Car Hours Charge
1 1.5 2.00
2 4.0 2.50
3 24.0 10.00
Total 29.5 14.50

Code:

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int car1,car2,car3,hour,hour2,hour3,charge1,charge2;
if (hour>=3) {
                charge2 = (minfee+hour*.50); //Very likely loss of data
}

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Also dear, rather than having 3 variables for cars, charges, etc. and going through that process 3 times, a simple loop of some kind or just a function could easily serve your purposes, with greater efficiency and less code. You see hun, they have these things call arrays for this. An array is a collection of data of the same type under one name.

Observe:

Code:

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int car1, car2, car3, car4, car5;    //Stupid way to do things.
int cars[5];                          //Fun way to do things.

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I'm not sure if you know about arrays and loops or not, but if not, I suggest you read up on them because they're unbelievably useful, especially used in conjunction with each other.

Also....
Really, how hard is it to proof-read?? Honestly.

Quote:

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printf("How many hour[s] did the car park[?]\n");

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And "minfee" has no type declared.

Also, I suggest you take up your assignment's advice:

Quote:

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use function called calculateCHarge to determine charge for each customer

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and write a function to help you.
Doing so will clean up your main(), which (in my opinion) is always nice, make it easier to code and calculate, and above all: make it easier to understand where a problem lies if you find out you have a bug in it.

Also, you tried to use minfee before you assigned it a value (never did), and didn't use it when you needed the minimum only (hard coded 2.00 instead), and finally you forgot that 2.00 + (21 * 0.50) is greater than maxfee which is 10.00. So I suggest in your loop you
start with 2.00,
subtract 3 hours,
if hours not negative, add (hours * 0.50)
subtract 16 hours
if hours not negative, subtract (hours * 0.50)
return result.

Code:

---


#include <stdio.h>

int main()
        {
                int car,counter=0;
                float minfee=2.00,maxfee=10.00,hours,totcharge,tothours,
                        calculateCharge;

                totcharge=0;
                tothours=0;
                counter=1;

                while(counter<=3){
               
                printf("enter car number\n");
                scanf("%d",&car);

                printf("enter hours parked\n");
                scanf("%f",&hours);
                       
                        if(hours<4) {
                                calculateCharge=minfee;
                                printf("%.2f",calculateCharge);
                        }
                        if(hours<=24) {
                                calculateCharge=(minfee+hours/2);
                                printf("%.2f",calculateCharge);
                        }
                        else  {
                                calculateCharge=maxfee;
                                printf("%.2f",calculateCharge);
                        }
                counter=counter+1;
                }
                while(hours>=3) {
                        calculateCharge=(minfee+hours/2);
               
                tothours=tothours+hours;
                printf("%.2f",tothours);

                totcharge=totcharge+calculateCharge;
                printf("%.2f",totcharge);

      return 0;
}

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I dont know why this is not printing tothours and totalcharge.Does any1 know?

Fix the syntax error for the missing } so that we know what you are acutally attempting to run.

my result was this

enter car number
1
enter hours parked
1.5
enter car number
2
enter hours parked
4.0
enter car number
3
enter hours parked
24.0
then shows infinite numbers scrolling down

result should be

Car Hours Charge
1 1.5 2.00
2 4.0 2.50
3 24.0 10.00
Total 29.5 14.50