gpt4 book ai didi

c++ - Lost data from double and Error : Windows has triggered a breakpoint in exe. 这可能是由于堆的损坏,

转载 作者:行者123 更新时间:2023-11-28 05:46:56 24 4
gpt4 key购买 nike

我已经在这段代码上工作了一段时间,我几乎让它工作了,但我遇到了一个问题。排序时我正在丢失数据。我输入的数字越多,显示的数字就越多。 link to the image of my output

此外,一旦代码运行,我就会收到一个带有此消息的弹出窗口(我注意到我在添加求和函数和之后的每个函数后收到此错误,但我没有按 F12):

“Windows 已在 project3.exe 中触发断点。

这可能是由于堆损坏,这表明 project3.exe 或它加载的任何 DLL 中存在错误。

这也可能是由于用户在按下 F12 时project3.exe 具有焦点。

输出窗口可能有更多的诊断信息。"

这是我的代码:在最后一个编号输入后要求用户输入数字,他们必须按零,它会显示回数据,显示一些统计信息并对数据进行排序。我没有检查用户错误

(*如果我不使用 system("pause"),终端窗口会关闭,所以这就是它在那里的原因,我知道我应该 'delete []arr 但在我置零后它会给我断点消息,这就是它被注释掉的原因)

#include <iostream>
#include <iomanip>
using namespace std;
void getdata(double *arr, double &data, int &floatpt);
void display (double *arr, int floatpt);
void computesum (double *arr, int floatpt, double sum);
void computearthmeticmean (double *arr, int floatpt, double aMean);
void computeharmonicmean (double *arr, int floatpt, double hMean);
void median(double *arr, int floatpt);
void sort (double *arr, int floatpt);
int main ()
{
double data, sum=0, aMean=0, hMean=0;
int count=0, floatpt;
double *arr =new double[count];

getdata (arr, data, floatpt);
cout<<"Thank you. The data you entered are "<<endl;
display(arr, floatpt);
cout<<"The following statistics were computed "<<endl;
computesum(arr,floatpt, sum);
computearthmeticmean(arr, floatpt, aMean);
median(arr, floatpt);
computeharmonicmean (arr, floatpt, hMean);
sort(arr, floatpt);
cout<<"The original data set is "<<endl;
display(arr, floatpt);
cout<<"Thank you for using this program. Enjoy your statistics "<<endl;

//delete []arr;


system ("pause");
return 0;
}
void getdata(double *arr, double &data, int &floatpt)
{
int count=0;

cout<<"Please enter floating point data.\n";
cout<<"After the last number has been entered press 0 (zero) \n";
do
{
cin>>arr[count];
data = arr[count];

count++;

}while(data != 0);
floatpt=(count-1);

}
void display (double *arr, int floatpt)
{
for(int i=0; i<floatpt; i++)
{
cout<<arr[i]<<endl;
}

}
void computesum (double *arr, int floatpt, double sum)
{
for (int j=0; j<floatpt; j++)
{
sum+=arr[j];
}
cout<<"Sum: "<<sum<<endl;

}
void computearthmeticmean (double *arr, int floatpt, double aMean)
{
for (int a=0; a<floatpt; a++)
{
aMean+=arr[a];
}
aMean=aMean/floatpt;
cout<<"Arithmetic Mean: "<<aMean<<endl;

}
void computeharmonicmean (double *arr, int floatpt, double hMean)
{
for (int h=0; h<floatpt; h++)
{
hMean+=(1/arr[h]);
}
hMean=floatpt/hMean;
cout<<"Harmonic Mean: "<<hMean<<endl;

}
void median(double *arr, int floatpt)
{
int temp;
double median;

for (int s=0; s<floatpt; s++)
{
for (int r=0; r<(floatpt-1); ++r)
{
if (arr[r] > arr[r+1])
{
temp = arr[r];
arr[r] = arr[r+1];
arr[r+1] = temp;
}
}

if (floatpt%2 == 0)
{
median = (arr[s/2] + arr[(s/2)-1])/2.0;
}
else
{
median = arr[s/2]/1.0;
}
}

cout<<"Median: "<<median<<endl;

}
void sort (double *arr, int floatpt)
{
cout<<"The sorted data set is: "<<endl;
for (int sd=0; sd<floatpt; sd++)
{
cout<<arr[sd]<<endl;
}
}

最佳答案

int count=0, floatpt;
double *arr =new double[count];

count为 0,因此您创建的数组没有分配。在 getdata因此,您读入了超出范围的内存位置。:

您是否打算稍后重新分配?

也许如果您尝试使用 std::vector<double> ,然后事情就会解决。它会自动调整自身大小,并且很容易进行边界检查。

像这样(未测试):

#include <vector>
// ...
std::vector<double> data;
getdata(arr);
// ...

void getdata(std::vector<double>& arr)
{
double nextValue;

cout<<"Please enter floating point data.\n";
cout<<"After the last number has been entered press 0 (zero) \n";
cin>>nextValue;
while(nextValue != 0)
{
arr.push_back(nextValue);
cin >> nextValue;
}
}

关于c++ - Lost data from double and Error : Windows has triggered a breakpoint in exe. 这可能是由于堆的损坏,,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36045095/

24 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com