Coding Problem-Help plz

This is a discussion on Coding Problem-Help plz within the C Programming forums, part of the General Programming Boards category; HI, I'm new at this so I just need a little bit of assistance in this. I have done the ...

  1. #1
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    Coding Problem-Help plz

    HI, I'm new at this so I just need a little bit of assistance in this. I have done the source code and everything for this problem but can't do 1 thing. I need the program to end when I type 99 hours. Below is the problem and source code. I would appreciate anyone's help. thanks.

    A parking garage charges a $2.00 minimum fee to park for up to 3 hours. The garage charges an additional $0.50 per hour for each hour or part thereof in excess of 3 hours. The maximum charge is $10.00. (Hint: That means you dont have to calculate for anything over 18 hours.) Write a program that calculates and prints the parking charges for a number of cars. The user will enter the number of hours in hours and tenths of an hour. For example, the user will enter 4.5 for 4 hours and 30 minutes. The user will enter 99 hours to signal that the program should end.

    Code:
    #include <stdio.h>
    
    int main()
    {
    	int car[3];
    	double hours[3],  total_hours  = 0;
    	double charge[3], total_charge = 0;
    	int i;
    	for ( i = 0; i < 3; ++i )
    	  //car[i]=0;
    	{
    		printf("Enter car number? ");
    		scanf("%d", &car[i]);
    
    		printf("Enter hours parked? ");
    		scanf("%lf", &hours[i]);
    
    		if ( hours[i] < 3 )
    		{
    			charge[i] = 2.0;
    		}
    		else if ( hours[i] < 18 )
    		{
    			charge[i] = 2.0 + (hours[i] - 3.0) * 0.50;
    		}
    		else
    		{
    			charge[i] = 10.0;
    		}
    
    	  //printf("%1f%1f\n", "car" "hours" "charge");
    
    	  //for (car=1; car < 3; ++car) {
    		//printf("%d%1f%1f\n", car,hours,charge[hours]);
    		//printf("%.2f%.2f\n", total_hours[hours],total_charge[charge]);
    
    		total_hours = total_hours + hours[i];
    		total_charge = total_charge + charge[i];
    	}
      printf("%s  %s   %s\n", "car", "hours", "charge");
    
    	for (i=0; i < 3; ++i) {
    	 printf("%d    %.1f     %.2f\n", car[i], hours[i], charge[i]);
    	}
    	printf("    %.2f    %.2f\n", total_hours/*[hours]*/,total_charge/*[charge]*/);
    
    	return 0;
    }

  2. #2
    ATH0 quzah's Avatar
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    Great, so you've posted some source code. What's the problem? What does it do? What doesn't it do that it should? What does it do that ti shouldn't? What output does it generate now? What output is it supposed to output? Starting to understand now? In other words: Ask Smart Questions!


    Quzah.
    Hope is the first step on the road to disappointment.

  3. #3
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    end the program

    I need the program to end when I type 99 hours...I dont know how to do that!

  4. #4
    Frequently Quite Prolix dwks's Avatar
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    break will break out of a loop.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


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  5. #5
    Frequently Quite Prolix dwks's Avatar
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    Like
    Code:
    int i = 0;
    while(1) {
        scanf("%i", &i);
        if(i==99) break;
        printf("%i", i);
    }
    printf("\ndone\n");
    Input/output:
    Code:
    2
    3
    7
    85
    200
    99
    
    done
    Or you can put another condition in the for loop:
    Code:
    for ( i = 0; i < 3 && input != 99; ++i )
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


    Other boards: DaniWeb, TPS
    Unofficial Wiki FAQ: cpwiki.sf.net

    My website: http://dwks.theprogrammingsite.com/
    Projects: codeform, xuni, atlantis, nort, etc.

  6. #6
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    Thanks very much!

  7. #7
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    oh sorry, one more thing, how do I put this into my code?

  8. #8
    Frequently Quite Prolix dwks's Avatar
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    In here
    Code:
    printf("Enter hours parked? ");
    		scanf("%lf", &hours[i]);
    
    /* . . . right here . . . */
    
    		if ( hours[i] < 3 )
    		{
    			charge[i] = 2.0;
    		}
    Add something like
    Code:
    if(hours[i] == 99) break;
    That will break out of the
    Code:
    for ( i = 0; i < 3; ++i )
    	  //car[i]=0;
    	{
    loop.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


    Other boards: DaniWeb, TPS
    Unofficial Wiki FAQ: cpwiki.sf.net

    My website: http://dwks.theprogrammingsite.com/
    Projects: codeform, xuni, atlantis, nort, etc.

  9. #9
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    Thanks alot!!!

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