how to create an C Array - iphone

Question

his guys,
i think this is a simple question but i do not know how to do it.
how do i create the line below dynamically from an array?
this is what i need to call.
//data source
NSString * sourceData[7] = {#"2", #"1", #"4", #"8", #"14", #"15", #"10"};
chartData = [WSData dataWithValues:[WSData arrayWithString:sourceData withLen:7]];
+ (NSArray *)arrayWithString:(NSString *[])strings
withLen:(NSUInteger)len {
NSMutableArray *tmpArr = [NSMutableArray
arrayWithCapacity:len];
NSUInteger i;
for (i=0; i<len; i++) {
[tmpArr addObject:strings[i]];
}
return [NSArray arrayWithArray:tmpArr];
}
thanks for all the help especially Daniel :)
this is the answer to the question
NSMutableArray * dayArray = [[NSMutableArray alloc] init];
dayArray = [NSMutableArray arrayWithCapacity:7];
NSMutableArray * sdArray = [[NSMutableArray alloc] init];
sdArray = [NSMutableArray arrayWithCapacity:7];
NSInteger drunked = [appDelegate.drinksOnDayArray count];
if (drunked !=0)
{
for(int i=6; i>=0; i--)
{
DayOfDrinks *drinksOnDay = [appDelegate.drinksOnDayArray objectAtIndex:i];
NSString * dayString= [NSDate stringForDisplayFromDateForChart:drinksOnDay.dateConsumed];
[dayArray addObject:dayString];//X label for graph the day of drink.
drinksOnDay.isDetailViewHydrated = NO;
[drinksOnDay hydrateDetailViewData];
NSNumber *sdNumber = drinksOnDay.standardDrinks;
[sdArray addObject: sdNumber];
}
NSString *sData[7];// = malloc(7 * sizeof(NSString *));
for (int i=0; i<7; i++)
{
DayOfDrinks *drinksOnDay = [appDelegate.drinksOnDayArray objectAtIndex:i];
sData[i] = [NSString stringWithFormat:#"%#",drinksOnDay.standardDrinks];
}
NSString * sourceData[7] = {sData[6],sData[5],sData[4],sData[3],sData[2],sData[1],sData[0] };
}

Answer 1

If you are only using the array as a call parm, and are not storing it somewhere or returning it from your current method:
NSString* sourceData[7];
for (i = 0; i < 7; i++) {
int num = <getTheValueYouWant>;
sourceData[i] = [NSString stringWithFormat:#"%d", num];
}
But note that if you intend to return the array, or store it in some long-lived variable, you need an entirely different setup.

Answer 2

So this is how you would create an NSMutableArray. Mutable because you're creating it at runtime.
NSString * sourceData = [[NSString alloc] initWithFormat:#""];
//assuming the array you have is arr with NSNumber objects
for (NSNumber *num in arr) {
[sourceData stringByAppendingFormat:#"%#", num];
}

Answer 3

You can try below code with the loop as you required.....
NSMutableArray *array;
array = [[NSMutableArray alloc] init];
[array addObject:[NSNumber numberWithFloat:1.0f]];
[array release];