如何绕十进制分数 2 十进制标志B. Objective-C

float roundToN/float num, int decimals/

{

 int tenpow = 1;

 for /; decimals; tenpow *= 10, decimals--/;

 return round/tenpow * num/ / tenpow;

}

float roundToTwo/float num/

{

 return round/100 * num/ / 100;

}

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];

formatter.numberStyle = NSNumberFormatterDecimalStyle;

formatter.setMaximumFractionDigits = 2;

formatter.setRoundingMode = NSNumberFormatterRoundUp;



NSString *numberString = [formatter stringFromNumber:@/10.358/];

NSLog/@"Result %@",numberString/; // Result 10.36

float roundedFloat = /int//sourceFloat * 100 + 0.5/ / 100.0;