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iOS Object-Oriented Objective-C Tying it All Together Cumulative Review

Posted by Rohan Bedi
Rohan Bedi
1,286 Points

how to convert NSNumber to a float value?

Create a float variable called runningTotal. Then, create a for in loop which iterates through the array you created in step 1. When the loop finishes running, the value of 'average' should be the average of the values contained in temp. (NOTE: To convert an NSNumber, 'x', to a float, use [x floatValue] )

variable_assignment.mm 
NSArray *temps = @[@75.5,@83.3,@96,@99.7];
float average;
float runningTotal;
for(NSNumber *num in temps){
float temp = [num floatValue];
  runningTotal += num;
}
average = runningTotal/[temps count];

1 Answer

Julian Garcia
Julian Garcia
18,380 Points
Julian Garcia
Julian Garcia
18,380 Points

Hi, just put it as follows:

  runningTotal += [num floatValue];

Hope it help.

Rohan Bedi
Rohan Bedi
1,286 Points

thanks :)