CODEWITHSUNDEEP
c++struct
Jtmy99
Jtmy99

Reputation: 11

Attempting to initialize multiple Struct Variables using a text file

The question may be worded poorly but I can do a better job explaining it here. Basically, I already initialized the struct and the 5 variables that need to utilize it. That all went off without a hitch, the problem came from the part of needing to use a text document to set the values of each struct. I need all 5 to be assigned in one go because the data is coming from a text file. To initialize one of the Variables the code looks like this;

int main(void){
    ifstream inputFile;
    ofstream outputFile;
    char input[10];
    char output[10];
    cout << "Enter Input File: ";
    cin >> input;
    cout << "Enter Output File: ";
    cin >> output;
    inputFile.open(input);
    outputFile.open(output);

struct Rental{
    int year;
    char make[10];
    char model[10];
    float price;
    bool available;
};

Rental Car1, Car2, Car3, Car4, Car5;

    inputFile >> Car1.make;
    inputFile >> Car1.model;
    inputFile >> Car1.price;
    inputFile >> Car1.available;

I need to find a way to replace the Car1 (which is a struct variable) with all five of them so that the text document can just keep scanning down. Is there anyway to replace just the Car1 portion of the struct? Any help is appreciated!

EDIT: I forgot to add that I am restricted and unable to use the String library.

Upvotes: 0

Views: 52

Answers (1)

smac89
smac89

Reputation: 43206

Overload the >> operator for istream

std::istream& operator >>(std::istream &inputFile, Rental& car) {
    inputFile >> car.make;
    inputFile >> car.model;
    inputFile >> car.price;
    inputFile >> car.available;

    return inputFile;
}

Now in main, you can do this:

int main () {
    ifstream inputFile;
    ofstream outputFile;
    char input[10];
    char output[10];
    cout << "Enter Input File: ";
    cin >> input;
    cout << "Enter Output File: ";
    cin >> output;
    inputFile.open(input);
    outputFile.open(output);

    Rental Car1, Car2, Car3, Car4, Car5;

    inputFile >> Car1 >> Car2 >> Car3 >> Car4 >> Car5;

    inputFile.close()

    ...

}

This should work when using any std::istream object, which means including std::cin.

Upvotes: 1

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