[Help-glpk] setting up a basic LP using glp_set_mat_row

[John Perry]

Hi

I'm trying to set up an LP using glp_set_mat_row. As I understand it, I need to
(1) create a problem
(2) set an objective direction 
(3) set the objective function's coefficients
(4) create columns
(5) create rows
(6) set the rows
(7) solve

The system I'm trying is simple: x >= 1, y >= 1, minimizing x + y. This has the 
solution (1,1), but the solver tells me there is no solution.

I'm sure I'm setting it up wrong, but I don't know what. I've attached code 
below; can anyone tell me what I'm doing wrong?

(If my etiquette is wrong, can anyone tell me how I should go about asking the 
question?)

regards
john perry

test.cpp
Description: test.cpp