OPINION
Billy Groves appeals his sentence for intimidation as a class D felony. 1 Groves raises one issue, which we revise and restate as:
I. Whether the trial court abused its discretion by classifying Groves's credit time as Class III; and
II. Whether the trial court abused its discretion by denying Groves credit for time served prior to sentencing.
We affirm in part, reverse in part, and remand. 2
The relevant facts follow. Between June 24, 2008 and September 2, 2003, Groves sent threatening letters to Tanya Dillard. During part of this time, Groves was incarcerated in the Indiana Department of Correction. During the rest of this period, Groves was on work release. On November 12, 2003, the State charged Groves with two counts of intimidation as class D felonies and one count of harassment as a class B misdemeanor. 3 On December 5, 2008, Groves was arrested on these charges. On December 8, 2008, at Groves's initial hearing, Groves threatened to kill Dillard. Based on Groves's threat at the initial hearing, the State charged Groves with another count of intimidation under a separate cause number. In a consolidated plea agreement, Groves pleaded guilty to one count of intimidation as a class D felony, and the State dismissed the other counts pursuant to the plea agreement, which left sentencing to the trial court's discretion. On June 28, 2004, the trial court sentenced Groves as follows:
A.) Three (8) years to the Indiana Department of Corrections, executed. Said sentence to run consecutive to any sentence imposed under defendant's Violation of Parole.
B.) Fine of $100 and Court costs of $134.
C.) Credit time to be classified as Class TII credit time.
D.) Protective Order is ordered continued.
Appellant's Appendix at 111.
I.
The first issue is whether the trial court abused its discretion by classifying Groves's credit time as Class III. Sentence-ing decisions rest within the discretion of the trial court and are reviewed on appeal only for an abuse of discretion. Smallwood v. State,
The State argues that Groves's failure to object at the sentencing hearing
*1232
constituted waiver. Generally, a failure to object to error in a proceeding, and thus preserve an issue on appeal, results in waiver. Brabandt v. State,
Groves is asking for 207 days of credit for time served prior to sentencing and 207 days good time credit.
4
Groves directs us to Ind.Code § 85-38-38-2(b)(4) (1998), which provides that a trial court's judgment of conviction must include "the amount of credit, including credit time earned, for time spent in confinement before sentencing." Our supreme court has interpreted Ind.Code § 35-88-3-2 to require that a "trial court's judgment of conviction separately include both the amount of time spent by the defendant prior to imposition of sentence and also the amount of credit time earned in accordance with the defendant's credit time class." Robinson v. State,
We will first examine whether the trial court properly addressed the amount of credit time earned in accordance with Groves's class. Groves argues that the trial court's sentence was in violation of Ind.Code § 35-50-6-8 (1998), which governs credit time classes and provides:
(a) A person assigned to Class I earns one (1) day of eredit time for each day he is imprisoned for a erime or confined awaiting trial or sentencing.
(b) A person assigned to Class II earns one (1) day of credit time for every two (2) days he is imprisoned for a crime or confined awaiting trial or sentencing.
(ec) A person assigned to Class III earns no credit time.
The sentencing order provided "Credit time to be clasgified as Class III credit time." Appellant's Appendix at 111. A person assigned to Class III earns no credit time. 1.0. 85-50-6-8(c) (1998). Although the trial court did not explicitly state that Groves would receive zero days of good time credit, its classification of Groves's credit time as Class III indicates the trial court's intention to assign Groves zero days. Thus, the trial court provided the amount of credit time earned in accordance with Groves's credit time class when it assigned Groves's credit time as Class IIL. 5
*1233 In classifying the credit time as Class III, the trial court relied on Ind. Code § 35-50-6-7, which provides:
A person under the control of a county detention facility or the department of correction who:
(1) has been charged with a new crime while confined; or
(2) has allegedly violated a rule of the department or county facility; may be immediately assigned to Class III and may have all earned credit time suspended pending disposition of the allegation.
The State charged Groves with two counts of intimidation and one count of harassment. The State arrested Groves on these charges on December 5, 2003. On December 8, 2003, Groves threatened Dillard during his initial hearing. The State then charged Groves with an additional count of intimidation. Because Groves was "a person under the control of a county detention facility or the department of correction" and was "charged with a new crime while confined," he could be assigned to Class III. Thus, the trial court did not abuse its discretion in classifying Groves's credit time as Class IIL.
IIL.
The second issue is whether the trial court abused its discretion by denying Groves credit for time served prior to sentencing. Ind.Code § 35-38-3-2 requires a trial court to separately include the credit for time served prior to sentencing in its judgment of conviction. Robinson,
The trial court relied on Ind.Code § 35-50-6-7 to classify Groves's credit time as Class III; however, our supreme court has held that "Ind.Code § 35-50-6 sets forth the procedures for earning good time eredit; it does not address credit for time served." Purcell v. State,
"A prisoner's release date is determined by the term of imprisonment imposed by the trial court less the time spent in confinement before sentencing less credit time earned." Robinson,
For the foregoing reasons, we affirm the trial court's classification of Groves's good time credit as Class III and reverse and *1234 remand for a determination of eredit for time served prior to sentencing.
Affirmed in part, reversed in part, and remanded.
Notes
. Ind.Code § 35-45-2-1(a)(2) (Supp.2003).
. Groves mentions that he "has attended church, Sober Life meetings, and Life Skills classes." Appellant's Brief at 6. To the extent Groves is arguing for educational credit time, he fails to develop a cogent argument. Failure to put forth a cogent argument acts as a - waiver of the issue on appeal,. Davenport v. State,
. Ind.Code § 35-45-2-2(a)(2) (1998).
. The Abstract of Judgment provides that Groves spent zero days confined prior to sentencing. Appellant's Appendix at 112.
. Groves appears to argue that the trial court could not place him in Class III and that he should have been in Class I. In Robinson, our supreme court permitted a trial court to make such a classification of credit time by holding that "viewing a sentencing statement's credit time designation as a mere 'recommendation' may be a relic from prior times." Robinson,
