Question

与标题状态一样，当我将它们存储在数组中并尝试输出它时，我会得到随机的科学数字。我不确定他们为什么会改变，因为没有对数字进行任何操作。由于数字的变化，我得到了不正确的华氏温度。

样本输入：天0-6 = 12 我星期天= 0，星期一= 1.32657e。等数虽然输入保持不变，但数字是随机的，甚至不一样

int main()
{
    const int DAYS_OF_WEEK = 7;
    const double MAXIMUM_TEMPERATURE = 60;
    const double MINIMUM_TEMPERATURE = -90 ;
    double temperature;
    int dayCount;
    double fahrenheit;
    double temperatures[6];
    string daysOfWeek[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};//string array for the days of the week

    for(int dayCount = 0; dayCount < DAYS_OF_WEEK; dayCount++)
    {
        cout << "Please enter the Temperature for " << daysOfWeek[dayCount] << " in Celsius: ";  // re-prompt for temperature
        cin >> temperature;

        while(cin.fail())// checks to see if cin failed
        {
            cin.clear(); 
            cout << "\nInvalid input. Only numeric values, please try again. "; // re-prompt
            cin >> temperature; // try to get the value again
            fflush(stdin); //clear input buffer
        }//end while

        if(temperature > MAXIMUM_TEMPERATURE || temperature < MINIMUM_TEMPERATURE)
        {
            cout << "\nInvalid input. Temperature must be between " << MINIMUM_TEMPERATURE <<" and " << MAXIMUM_TEMPERATURE <<". Please try again." << endl;// re-prompt user for temp between ranges
            cin >> temperature;
        }
        else
        {
            temperature = temperatures[dayCount];
        }//end else
    }//end for
    cout << "Temperatures for the Week.\n_________________________________________________";

    for (int dayCount = 0; dayCount < DAYS_OF_WEEK; dayCount++)
    {           
        cout << "\nTemperature for " << daysOfWeek[dayCount] << " in Celsius is: " << temperatures[dayCount];
        fahrenheit = (5.0/9.0) * (temperatures[dayCount] + 32);
        cout << "In Fahrenheit it is:" << fahrenheit;
    }   //end for

    return 0;
}//end main

Answer 1

我假设在这一行

            {
            temperature = temperatures[dayCount];
        }//end else

你的意思是另一个方向

temperatures[dayCount] = temperature;

因为作业是左侧的右侧。

垃圾值的原因是温度未初始化并且其中包含垃圾值。在整个过程中，由于上述错误，您没有更改该数组的值。

获取随机科学数字而不是输入

1 个答案: