c++ - 未初始化？，tuitionCost，局部变量，

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int main()

{
    double tuitionCalc(int sumCreditHoursTaken);

    int numCourses;
    double total = 0.0;
    double tuitionCost= 0.0;


    cout << "\t\t This Program calculates a student's total number of\n";
    cout << "\t\tcredit hours and tution for a given semester.\n";

    cout << "\nPlease enter the number of Courses you will be taking this semester: ";
    cin >> numCourses;

    for ( int count = 1; count <= numCourses; count++)
    {
        double sumCreditHoursTaken;
        cout << " please enter the number of credit hours for course" << count << ": ";
        cin >> sumCreditHoursTaken;
        total += sumCreditHoursTaken;
    }

    cout << fixed << showpoint << setprecision(2);
    cout << "Your Total number of credit hours is: " << total << endl;
    cout << "Your total tuition will be: $" << tuitionCalc(tuitionCost) << "\n\n";

    return 0;
}

我正在调用的功能是

double tuitionCalc(int sumCreditHoursTaken)
{
    double tuitionCost = 0.0;
    double costCreditHour = 147.00;
    double maxHoursFullTuition = 12;
    double maintFeeAddOn = 29.33;`

    if (sumCreditHoursTaken <= maxHoursFullTuition)
        cout<< " " <<  (sumCreditHoursTaken * costCreditHour);
    else if (sumCreditHoursTaken > maxHoursFullTuition)
        cout << " " << (maxHoursFullTuition * costCreditHour) + ((sumCreditHoursTaken - maxHoursFullTuition) * maintFeeAddOn);

    return tuitionCost;
}

课程数的输入是5
和学分是3,3,3.5,4,2.5
我得到了总学时，但似乎无法显示学费？
谢谢你

最佳答案

您实际上从未在tuitionCost方法中为tuitionCalc()分配值，因此它将始终为0.0。

详细说明：您正在从tuitionCost返回tuitionCalc()。您首先初始化tuitionCost = 0.0，但不要继续为其分配任何计算值。因此，当您返回tuitionCost时，它将返回您将其初始化为的值：0.0。