File input
Is it possible to read input from a file function that is outside the function that opens the file.
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int OpenFile(string inFileName, AList* fr)
{
//local variables
ifstream openFile;
int fileStatus;
//open the file
openFile.open(inFileName.c_str());
//if file doesn't exist exit the program
if(!openFile)
{
fileStatus = 1;
}
else //if the file exists call LoadFile() and store data into linked lists
{
fileStatus = 0;
}//end
return fileStatus;
}
void LoadFileVehicle(ifstream& vehicleFile, AList* head)
{
autoStack *nNode; //creates a new node
autoStack *current; //last node
char vehicleType; //char from file V or A
string license; //string from file license plate
int capacity; //int from file capacity of vehicle
//nNode = CreateNode();
if(nNode){
//prime the the variables with the first record;
vehicleFile >> vehicleType;
vehicleFile >> license;
vehicleFile >> capacity;
}
do
{
newNode = new autoStack;
newNode->vehicleType = vehicleType;
newNode->license = license;
newNode->capacity = capacity;
newNode->nextVehicle = NULL;
if(firstRecord == NULL)
firstRecord = newNode;
if(last != NULL)
last->nextVehicle = newNode;
last = newNode;
vehicleFile >> vehicleType;
vehicleFile >> license;
vehicleFile >> capacity;
}while (vehicleFile); //end do while loop when file is done loading
}
}
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Or does LoadFileVehicle() need to be inside of OpenFile()
Last edited on
Yes, it's possible but not with the way you currently have your code.
Line 4: openFIle is a local variable. It goes out of scope (closed automatically) when OpenFile returns to the caller (line 23).
Pass the ifstream for openFile to OpenFile by reference.
Thank you I have been stuck on this part of my homework for two days now.
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