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## Re: [Help-glpk] glpk Limitation? Or what is the problem

**From**: |
xypron . glpk |

**Subject**: |
Re: [Help-glpk] glpk Limitation? Or what is the problem |

**Date**: |
Wed, 19 Jun 2013 12:52:16 +0200 (CEST) |

Hello John,
error C0000005 is a memory access violation.
Best regards
Heinrich Schuchardt
http://www.xypron.de
Am 19.06.13 um 11:28 schrieb john tass
>* Good morning,*
>* *
>* I am trying to solve a large LP problem and I start my code (in C++) using*
>* *
>* the following lines.*
>* *
>* *
>* *
>* *
>* *
>* int C = 30;*
>* *
>* int H = 30;*
>* *
>* int R = 6;*
>* *
>* *
>* *
>* glp_prob *lp;*
>* *
>* int ia[1 + C*H*R + C*R], ja[1 + C*H*R + C*R];*
>* *
>* double ar[1 + C*H*R + C*R], z;*
>* *
>* *
>* *
>* cout<<"Basic matrices of LP problem are defined"<<"\n";*
>* *
>* *
>* *
>* lp = glp_create_prob();*
>* *
>* cout<<"lp problem created"<<"\n";*
>* *
>* glp_set_prob_name(lp, "sample");*
>* *
>* cout<<"Name of lp problem defined"<<"\n";*
>* *
>* glp_set_obj_dir(lp, GLP_MIN);*
>* *
>* cout<<"Direction of lp problem defined"<<"\n";*
>* *
>* *
>* *
>* But something is wrong and I can not realize what it is. The program*
>* *
>* interrupt as soon as it gets at line 9*
>* *
>* (cout<<"Basic matrices of LP problem are defined"<<"\n";) which is*
>* *
>* executed fine. The problem occurs at the next line 10*
>* *
>* (lp = glp_create_prob();)*
>* *
>* and the program returns an error code like "3221225477". Is the problem*
>* *
>* related to the size of LP problem?*
>* *
>* Thanks for helping me*
>* *
>* Ioannis Tassopoulos*