错误:名称查找“我”改变ISO'为'作用域 [英] error: name lookup of 'i' changed for ISO 'for' scoping

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问题描述

我已经看过类似这样仍然无法找出什么是错我的code等话题。以下是在我的计划找到阵列的平均值(平均)的功能。我得到错误的标题:错误:的我改变ISO'名称查找为作用域与注意事项如下:如果你使用。-fpermissize'G ++会接受你的code

 双GetMean(双数组[],INT ArrayLength)
{
    INT求和,平均值;
    的for(int i = 0; I< ArrayLength;我++)
    {
         总和= SUM +阵列[我]
    }    平均= SUM /阵列[我]    回归均值;
}

意见和解释是可爱的,所以我能理解我在做什么是地狱的错误:/


解决方案

 的for(int i = 0; I< ArrayLength;我++)

当你定义 I 在这样的头,其范围是为循环。你不能使用它循环外像平均值= SUM /阵列[我]; 在code。

将其更改为:

  INT I;
对于(i = 0; I< ArrayLength;我++)

另外请注意你从来没有初始化总和

I have looked at other topics similar to this and still cannot find out what is wrong with my code. The following is a function in my program to find the Mean (Average) of Arrays. I get the error in the title: error: name lookup of 'i" changed for ISO 'for' scoping. following with note: if you use '-fpermissize' g++ will accept your code.

double GetMean ( double Array[], int ArrayLength )
{
    int Sum, Mean;
    for ( int i = 0; i < ArrayLength; i++ )
    {
         Sum = Sum + Array[i];
    }

    Mean = Sum / Array[i];

    return Mean;
}

Ideas and explanation would be lovely so I can understand what the hell I'm doing wrong :/

解决方案

for (int i = 0; i < ArrayLength; i++)

When you define i in the for header like this, its scope is inside the for loop. You can't use it outside the for loop like Mean = Sum / Array[i]; in your code.

Change it to:

int i;
for (i = 0; i < ArrayLength; i++)

Also note you never initialize Sum.

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