Re: [Help-glpk] Problem : lpx_set_col_bnd

[Andrew Makhorin]

> I have a big Problem.

> I want changing my bound. but, after have to print bounds' variable, I
> obtain an other bound.

> My code is :

>>for(int id=0;id<ncol;id++){
>>    lpx_set_col_bnds(glpkProbPtr,id+1,LPX_LO,0.0,0.0);
>>}
>>cout<<"before "<<endl;
>>for (int id=0;id<ncol;id++){
>>  lpx_set_col_bnds(glpkProbPtr,id+1,LPX_DB,0.,4.);
>>  cout<<"LB= "<<lpx_get_col_lb(glpkProbPtr,bPtr->id+1);
>>  cout<<" and  UB="<<lpx_get_col_ub(glpkProbPtr,bPtr->id+1)<<endl;
>>}
>>cout<<"after "<<endl;
>>for(int id=0;id<ncol;id++)                                       
>>  cout<<"LB= "<<lpx_get_col_lb(glpkProbPtr,id+1)<<" and UB=
>> "<<lpx_get_col_ub(glpkProbPtr,id+1)<<endl; 


> I obtain:

> before 
> LB= 0 and UB= 4
> LB= 0 and UB= 4
> LB= 0 and UB= 4
> after 
> LB= 0 and UB= 0
> LB= 0 and UB= 0
> LB= 0 and UB= 0

> Why?


Please check your code more carefully. There is something wrong in it.