How to convert NSString value @"3.45" into float?

Question

How to convert NSString value @"3.45" into float. 3.45

float fCost = [[NSDecimalNumber decimalNumberWithString:@"3.45"]floatValue] ;

Answer 1

NSString *val = @"3.45";
float fCost = [val floatValue];

Answer 2

float number = [string floatValue];

Answer 3

NSString's: - (float)floatValue;

For example:

NSString *str = @"3.45";
float f = [str floatValue];