Edit: If it matters, I'm using Dev C++ with -std=c99 as an option.

My professor was able to run this code in class and successfully open a file that eventually reads the data into a linked list. When running the exact same code, my program abruptly exits despite the file being successfully opened.

All I'm trying to do is get this code to run. I've solved what he wants us to solve in my own example, but I can't figure out why his code doesn't run on my machine.

I did add in a puts("Success") line to verify the file has been opened, and I've gone through the methods it calls to see if I can find an error, but I cannot. 

Here is the method with the issue (I'm assuming)

```
int ReadFileStoreInList(void)
{ 
   FILE *cfPtr; 

   if ((cfPtr = fopen("Hertz-Homework-9-List.txt", "r")) !=NULL) 
   { 
      char  make[TWELVE]={""}, model[TWELVE]={""}, size[TWELVE]={""}, color[TWELVE]={""}, power[TWELVE]={""};
      char rented = 'A';
      float daily_rate=0.0;
      char dAilyRate[TWELVE]; 
      fscanf(cfPtr, "%s%s%s%s%s%s", make, model, size, color, power, dAilyRate);
      while (!feof(cfPtr)) 
      { 
         fscanf(cfPtr, "%s%s%s%s%s%f", make, model, size, color, power, &daily_rate);
         rented = 'A';  
         add_at_end(make, model, size, color, power, daily_rate, rented);
      } 
      printScreenTitleAndHeaderForCars();   
      traverse_in_order();
   }
   else 
   {
      puts("Input data file could not be opened, I have no new inventory of cars from headquarters\n\n\n");
   }
   fclose(cfPtr); 
}

```

This calls traverse\_in\_order(); and printScreenTitleAndHeaderForCars();, which I will list below.

```
void traverse_in_order() 
{    
    node *ptr;  

    if(start==NULL) 
    {   
        printf("list is empty\n");        
        return;    
    }
    printScreenTitleAndHeaderForCars(); 

    for(ptr=start; ptr!=NULL; ptr=(*ptr).next)
         printf("%-12s%-12s%-12s%-12s%-12s%9.2f%12c\n", ptr->make, ptr->model, ptr->size, ptr->color, ptr->power, ptr->daily_rate, ptr->rented);
}  

void printScreenTitleAndHeaderForCars()
{
    system("Cls");
      printf("%35s\n\n","Hertz Rental Cars");
      printf("%79s\n","Avail");
      printf("%-12s%-12s%-12s%-12s%-12s%-12s%8s\n", "Make", "Model", "Size", "Color", "Power", "Daily_Rate", "Rented");

      for (int x=0; x< 7; x++)
         printf("----------- ");
      printf("\n");
}

```

In case the structure/header file was also needed:

```
#define TWELVE 12

typedef struct node_type 
{   
    char make[TWELVE];
    char model[TWELVE];
    char size[TWELVE];
    char color[TWELVE];
    char power[TWELVE];
    float daily_rate;
    char rented;         
    struct node_type *next;
} node;

node *start=NULL;

int ReadFileStoreInList(void);

void add_at_beginning();
void add_at_end(char make[TWELVE], char model[TWELVE], char size[TWELVE], char color[TWELVE], char power[TWELVE], float daily_rate, char rented);
void add_after_element();
void add_before_element();
void traverse_in_order();
void traverse_in_reverse_order(node *);
void delete_at_beginning();
void delete_at_end();
void delete_after_element();
void delete_before_element();
void sort();
void doSomething();      // menu to ask operator what to do 
void RentaCar();
void FindCarAndUpdateAsRented(char *modelSelected);
void ReturnCar();
void toTitleCase(char *aString);
void printScreenTitleAndHeaderForCars();

```

Requested add\_at\_end function:

```
void add_at_end(char make[TWELVE], char model[TWELVE], char size[TWELVE], char color[TWELVE], char power[TWELVE], float daily_rate, char rented)
{    
    node *ptr, *loc;          
    ptr = (node *) malloc(sizeof(node));  
    if(ptr==NULL)            
    {  
    printf("no space\n");  
    return;    
    }

    strcpy((*ptr).make,make);    
    strcpy((*ptr).model,model);
    strcpy((*ptr).size,size);    
    strcpy((*ptr).color,color);    
    strcpy((*ptr).power,power);    
    (*ptr).daily_rate = daily_rate;
    (*ptr).rented = rented;
    if(start==NULL)            
    {  
        start=ptr;             
        (*start).next=NULL;    
    }
    else  
    {
        loc = start;                
        while((*loc).next != NULL)  
           loc=(*loc).next;
        (*loc).next=ptr;            
        (*ptr).next=NULL;          
    }  
}  

```

Interesting enough, if I rename this file to something that isn't correct, the proper printScreenTitleAndHeaderForCars() text executes and shows on screen. That's why I believe it has something to do with ReadFileStoreInList();

I've tried to debug this for a few hours now, but with the knowledge I've learned in class I just can not figure out why this doesn't run. 

I expect the output to have the header information given from printScreenTitleAndHeaderForCars(), and then the data from the file I'm reading to appear on screen. 

When the file is named improperly in my code, it runs this:

```
                  Hertz Rental Cars

                                                                          Avail
Make        Model       Size        Color       Power       Daily_Rate    Rented
----------- ----------- ----------- ----------- ----------- ----------- -----------
list is empty

enter choice
 1. Select Model and Rent
 2. Select Model and Return
 5. traverse in order
 11. sort
 12. exit

```

Where "list is empty" is situated, it should be populating the data from the text file and putting it there. 

Instead, I just get:

```

--------------------------------
Process exited after 1.433 seconds with return value 3221225477
Press any key to continue . . .

```

I have a feeling this has to do with the way the pointers are written, but I'm struggling to understand how he could run the code and I couldn't.

Any knowledge as to why this might happen would be appreciated!

Edit: Text file contents:

```
make, model, size, color, power,daily rate.
Mazda,3,4-door,Black,4-Cyl,$99.73 
Jeep,Cherokee,4-door,Blue,8-Cyl,$131.92 
Buick,Regal,4-door,Purple,6-Cyl,$125.19 
Fullsize,SUV,5-door,Brown,8-Cyl,$163.94 
Chrysler,Pacifica,4-door,Green,6-Cyl,$127.49 
Ford,Focus,2-door,Red,4-Cyl,$99.73 
VW,Jetta,2-door,Orange,4-Cyl,$94.91 
Chevrolet,Suburban,4-door,Yellow,8-Cyl,$204.92 
Nissan,Pathfinder,4-door,White,6-Cyl,$145.11 
Chevrolet,Spark,2-door,Teal,4-Cyl,$99.55 

```