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我正在尝试编写一个接受 3 个不同数组的函数。这些数组的类型分别是字符串、双精度和双精度。该函数将用数据填充这些数组,然后将它们返回给 main。但是,我不确定要声明什么作为函数的返回类型,因为所有数组都不包含相同的数据类型。下面列出了将接受数组作为参数的函数

void additems(string arry1[], double arry2[], double arry3[], int index)
{
/*************************  additems **************************
NAME: additems
PURPOSE: Prompt user for airport id, elevation, runway length.  Validate input and add to 3 seperate parallel arrays
CALLED BY: main
INPUT: airportID[], elevation[], runlength[], SIZE
OUTPUT: airporID[], elevation[], runlength[]
****************************************************************************/
    //This function will prompt the user for airport id, elevation, and runway     length and add them to 
    //separate parallel arrays
    for (int i=0; i<index; i++)
    {
        cout << "Enter the airport code for airport " << i+1 << ". ";
        cin >> arry1[i];
        cout << "Enter the maximum elevation airport " << i+1 << " flys at (in ft). ";
        cin >> arry2[i];
        while (arry2[i] <= 0)
        {
            cout << "\t\t-----ERROR-----";
            cout << "\n\t\tElevation must be greater than 0";
            cout << "\n\t\tPlease re enter the max elevation (ft). ";
            cin >> arry2[i];
        } 
        cout << "Enter the longest runway at the airport " << i+1 << " (in ft). ";
        cin >> arry3[i];
        while (arry3[i] <= 0)
        {
            cout << "\t\t-----ERROR-----";
            cout << "\n\t\tRunway length must be greater than 0";
            cout << "\n\t\tPlease re enter the longest runway length (ft). ";
            cin >> arry3[i];
        }
        cout << endl;
    }   

    return arry1, arry2, arry3;
   }

提前感谢您考虑我的问题

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2 回答 2

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您不需要返回数组,因为它们是由函数修改的。当您将数组传递给这样的函数时,数组是通过引用传递的。通常,数据类型是按值传递的(复制),但数组的处理方式有点像指针。

所以只需 return void,或者如果你愿意,你可以返回某种值来表示成功(如果合适的话)。您可能希望返回一个整数来说明输入了多少记录(如果用户可以选择输入少于index记录)。

于 2012-10-25T04:40:18.370 回答
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你可以说

return;

或完全忽略它。您正在就地修改传入的数组,因此无需返回任何内容。

于 2012-10-25T04:43:15.573 回答