Print values of an array without passing as a parameter

Question

Is there a way to print the values of infoArray from PrintReport() without passing the infoArray as a parameter?

int main() {
    int sizeOfArray = 3;
    float subjectP[sizeOfArray];
    float subjectQ[sizeOfArray];
    float infoArray[sizeOfArray];
    
    InputMarks(subjectP, sizeOfArray);
    InputMarks(subjectQ, sizeOfArray);
    
    StoreData(subjectP, subjectQ, infoArray, sizeOfArray, 'G');
    StoreData(subjectP, subjectQ, infoArray, sizeOfArray, 'T');

    PrintReport(subjectP, subjectQ, sizeOfArray);
    
    return 0;
}

void StoreData(float value1[], float value2[], float value3[], int sizeOfArray, char mode) {
    for(int i=0; i<sizeOfArray; i++) {
        float val1 = value1[i];
        float val2 = value2[i];
        switch(mode) {
            case 'G':
                value3[i] = MaxMark(val1, val2);
                break;
            case 'T':
                value3[i] = TotalMark(val1, val2);
                break;
            default : 
                cout << "invalid mode";
        }
    }
}

void PrintReport(float value1[], float value2[], int sizeOfArray) {
    cout << setw(10) << left << "Class";
    cout << setw(10) << left << "Subject P";
    cout << setw(10) << left << "Subject Q";
    cout << setw(10) << left << "Min";
    cout << setw(10) << left << "Max" << endl;
    
    for(int i=0; i<sizeOfArray; i++) {
        cout << setw(10) << left << "A";
        cout << setw(10) << left << value1[i];
        cout << setw(10) << left << value2[i];
        /// How to get infoArray[i] values here?
    }
}

You can template the function over a size type and pass a reference like so. It's probably easier to just switch to using std::array or std::vector if you really want to pass things to functions smoothly, though. — Nathan Pierson
– Nathan Pierson, Commented Jul 8, 2021 at 17:48
What issues are you having? It's not clear what problem you are trying to solve. Why is passing the array as a parameter undesirable? There could be good answers if the question were clearer. — Drew Dormann
– Drew Dormann, Commented Jul 8, 2021 at 17:53
You could make infoArray a global variable. But I'm not saying that would be a good thing to do. — Adrian Mole
– Adrian Mole, Commented Jul 8, 2021 at 18:03

Remy Lebeau · Accepted Answer · 2021-07-08 18:25:10Z

3

You can either make the variable infoArray[] global, or make use of classes.

I recommend using a class, making the variable infoArray be a private member. You can access it within the class, and you have the possibility to create a public getter for that variable, if needed.

edited Jul 8, 2021 at 18:25

Remy Lebeau

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answered Jul 8, 2021 at 18:14

IwillbeBetter

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