Decimal point adjustment for string in iPhone.

Question

Hello all,

I want to display a number in decimal format only if the number is not an integer. Like if the number is float it must be displayed with one decimal point. But if the number is an integer it must be displayed without a decimal point like its shown in the following link(second part of the code)

http://www.csharp-examples.net/string-format-double/

I am using a string like

NSString *temp =[NSString stringWithFormat:@"0.1f" , 10];

this temp is 10.0 I want it to be 10 but if I am doing as follows

NSString *temp =[NSString stringWithFormat:@"0.1f" , 10.9];

then it must be like 10.9

How to resolve this in iPhone.

Answer 1

You could check the value of the string against a cast, then format the string accordingly:

float     x = 42.1;  // whatever
long      x_int = x;
bool      is_integer = x_int == x;
NSString* temp = nil;

if (is_integer)
{
    temp = [NSString stringWithFormat:@"%d", x_int];
}
else
{
    temp = [NSString stringWithFormat:@"%0.1f", x];
}

Answer 2

I got the solution,

NSString *temp =[NSString stringWithFormat:@"%g" , 10.9];