# \[AMPL 25071\] Variable declared as Integer/ Results is fractional **URL:** \ **Category:** Google Group Mirror\ **Created:** [December 9, 2024, 3:17pm UTC](https://discuss.ampl.com/t/ampl-25071-variable-declared-as-integer-results-is-fractional/2003 "2024-12-09T15:17:38Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![4er](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/4er/32/530_2.png) [@4er](https://discuss.ampl.com/u/4er)\ **Post date:** [December 11, 2024, 2:47pm UTC](https://discuss.ampl.com/t/ampl-25071-variable-declared-as-integer-results-is-fractional/2003/2 "2024-12-11T14:47:39Z")
I see just one integer variable in your model: ```auto var CVE integer >= 0; ``` But when I solve your problem using `include Computercafee_2024_12_09.run;` the value of CVE in the results is integer: ```auto ampl: include Computercafee_2024_12_09.run; ........ Gurobi 12.0.0: optimal solution; objective 51263455.89 3121 simplex iterations 3 branching nodes ....... ampl: option display_precision 0; ampl: display CVE; CVE = 4 ``` (By setting `option display_precision 0;` I am asking `display` to use the maximum precision possible, to be sure the result value is exactly 4.) I also get this result with Gurobi version 11, though it uses a different algorithm. The integer variable can be relaxed by use of the `.relax` suffix, like this: ```auto let CVE.relax := 1; solve; ``` Then `CVE` has a fractional result value, and the maximal objective value is higher: ```auto Gurobi 12.0.0: optimal solution; objective 51440779.46 5172 simplex iterations 3 branching nodes ....... ampl: option display_precision 0; ampl: display CVE; CVE = 4.339090190246878 ``` Can you post an example (including the files) where `CVE` is supposed to be integer, but it is fractional in the result? --- _[View the full topic](https://discuss.ampl.com/t/ampl-25071-variable-declared-as-integer-results-is-fractional/2003)._