问题描述

所以我有这个复杂的类，我想要一个复数的二维数组，这是代码的一部分而不是全部代码

So i have this complex class , and i want to have an 2d array of complex numbers this is part of the code not all the code

class Complex {
public:
    /* construction/destruction */
    Complex(double r, double i)     { this->r = r; this->i = i; }
    Complex()                       { r=0.0; i=0.0; }
    ~Complex()                      { r=0.0; i=0.0; }
        /* operations */
    Complex operator+(Complex &c)   { return Complex( r+c.r, i+c.i ); }
        double r, i;
};

int main()
{
const int HEIGHT = 256;
const int WIDTH = 256;
Complex G[HEIGHT][WIDTH];
}

所以行 Complex G[HEIGHT][WIDTH];是导致问题的线路，知道为什么吗?

so the line Complex G[HEIGHT][WIDTH]; is the line that causes the problem , any idea why ?

推荐答案

Visual Studio 默认为 1MB 堆栈大小，看起来像:

Visual studio defaults to 1MB stack size, it looks like:

Complex G[HEIGHT][WIDTH];

大约 1MB，您可以使用 /F 并且文档说(强调我的):

will be just about 1MB, you can modify this using /F and the document says (emphasis mine):

如果没有此选项，堆栈大小默认为 1 MB.number 参数可以是十进制或 C 语言表示法.该参数的范围可以从 1 到链接器接受的最大堆栈大小.链接器将指定的值向上舍入到最接近的 4 个字节./F 和数字之间的空格是可选的.

Without this option the stack size defaults to 1 MB. The number argument can be in decimal or C-language notation. The argument can range from 1 to the maximum stack size accepted by the linker. The linker rounds up the specified value to the nearest 4 bytes. The space between /F and numberis optional.

最明显的替代方法是通过new 或std::vector.

The most obvious alternative would be to use dynamic memory allocation via new or std::vector.

Visual Studio 据我所知实际上有 较小的默认堆栈大小之一:

Visual Studio as far as I know actually has one of the smaller default stack sizes:

platform    default size       
=====================================
SunOS/Solaris  8192K bytes
Linux          8192K bytes
Windows        1024K bytes
cygwin         2048K bytes
Mac OS X       8192K bytes

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