#import <Foundation/Foundation.h>
 
int main(int argc, const char * argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    
    double fTemp = 0.0;                  // fahrenheit temperature
    NSString *cTemp;                     // celsius temperature
    
    NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
        
    [formatter setNumberStyle:NSNumberFormatterDecimalStyle];
    [formatter setMaximumFractionDigits:2];
    [formatter setRoundingMode:NSNumberFormatterRoundUp];

    NSLog(@"Fahrenheit -> Celsius");
    
    while (fTemp <= 220)
    {
        cTemp = [formatter stringFromNumber:[NSNumber numberWithFloat:(fTemp - 32) * 5 / 9]];
        
        NSLog(@"%g -> %@", fTemp, cTemp);
        fTemp += 20;
    }
    
    [pool drain];
    return 0;
}// end of main