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# Import "ViewController. h "@ interface ViewController () @ end @ implementation ViewController-(void) viewDidLoad {[super viewDidLoad]; NSLog (@" ---- % @ --- ", [self decimalwithFormat: @ "0.0000" floatV: 0.334]); NSLog (@ "---- % @ ---", [self decimalwithFormat: @ "0.0000" floatV: 0.334569]); NSLog (@ "---- % @ ---", [self decimalwithFormat: @ "0.0000" floatV: 0.334519]);}-(void) didReceiveMemoryWarning {[super didreceivemorywarning]; // Dispose of any resources that can be recreated .} // format-(NSString *) Round :( NSString *) format floatV :( float) floatV {NSNumberFormatter * numberFormatter = [[NSNumberFormatter alloc] init]; [numberFormatter setPositiveFormat: format]; return [numberFormatter stringFromNumber: [NSNumber numberWithFloat: floatV];} @ end
Finally, the console prints the result:
2014-03-19 15:44:45.262 TestNumberFormatter[3056:60b] ----0.3340---2014-03-19 15:44:45.263 TestNumberFormatter[3056:60b] ----0.3346---2014-03-19 15:44:45.263 TestNumberFormatter[3056:60b] ----0.3345---