c++ - Oddity with structs defined in files other than main.cpp -


I have found that a straight (with an array of doubles and an integer) is defined in a separate CPP file, but It is said to send couture to the array for the unrealistic values ​​from the main.

I am sorry that my code should be framed - I am struggling with it quite a bit with formatting.

Best, which

(1) main.cpp: 

  #include "Iostream" #include "defs.h" using namespace std; Int main () {MyStruct myModel = ConstructModel (); Cout & lt; & Lt; Andal & lt; & Lt; "Mammoth goes first:" & lt; & Lt; Endl; For (Int i = 0; I

(3) defs.h: 

  #ifndef DEFS_H # Defined DEFS_H struct MyStruct {double * Y; / / Length (N + 1) Int N; }; Mystate Construction MODEL (); #endif

console output

on my machine (WinXP 32bit, MSVC2008):

MyModel goes first:

myModel.Y [0] = 1.12947e-307

myModel.Y [1] = 1.80243e-307

myModel .n = 2

now myOtherModel:

myOtherModel.Y [0] = 0.1

myOtherModel.Y [1] = 0.1

Your structure is a nude indicator for doubles. In defs.cpp, you are starting it in the local variable outside of the ConstructModel () , that memory is no longer valid

if you want an array in a straight line , You must declare it (its size, in which everyone should be equal to MyStruct s). But instead of using arrays, why do not you use the example std :: list & lt; Double & gt; or std :: vector & lt; Double & gt; ?


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