how to set height of uilabel equal to uitableviewcell

how to set height of uilabel equal to uitableviewcell

I have a grouped style Tableview which have uilabels in Tableviewcell. Now
i want to set height of uilabels equal to height of cell how can i do
ths???
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:nil];
if (cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
// here i want to make height of label equal to height of cell
UILabel *category = [[UILabel alloc] initWithFrame:CGRectMake(95,1,140,25)];
category.font = [UIFont fontWithName:@"Arial" size:14.0f] ;
category.textAlignment = NSTextAlignmentRight;
[category setBackgroundColor:[UIColor clearColor]];
[cell addSubview:category];
}