Example description

 E04TAF Example Program Results

 Solve the first LP

 E04MT, Interior point method for LP problems
 Status: converged, an optimal solution found
 Final primal objective value  8.500000E+02
 Final dual objective value    8.500000E+02
 
 Primal variables:
   idx   Lower bound       Value       Upper bound
     1   0.00000E+00    2.00000E+02         inf
     2   0.00000E+00    1.00000E+02    1.00000E+02

 The new variable has been added, solve the handle again

 E04MT, Interior point method for LP problems
 Status: converged, an optimal solution found
 Final primal objective value  9.000000E+02
 Final dual objective value    9.000000E+02
 
 Primal variables:
   idx   Lower bound       Value       Upper bound
     1   0.00000E+00    5.00000E+01         inf
     2   0.00000E+00    1.00000E+02    1.00000E+02
     3   0.00000E+00    5.00000E+01    5.00000E+01

 The new constraint has been added, solve the handle again

 E04MT, Interior point method for LP problems
 Status: converged, an optimal solution found
 Final primal objective value  8.750000E+02
 Final dual objective value    8.750000E+02
 
 Primal variables:
   idx   Lower bound       Value       Upper bound
     1   0.00000E+00    1.50000E+02         inf
     2   0.00000E+00    5.00000E+01    1.00000E+02
     3   0.00000E+00    5.00000E+01    5.00000E+01