Represent double value as NSString

What is the correct way of represent double value as NSString ? In my code, it is calculating or rather doing some kind of rounding..I am not sure. Below is my code;

X = [NSString stringWithFormat:@"%d", [abc doubleValue] - [xyz doubleValue]];

I am getting abc is 69206000000, xyz is 31687000000, X is 5872开发者_开发技巧0256

Please help me.

Use the %f format modifier to display a double value - the %d in your code refers to an integer value. (See String Format Specifiers for more info.)

Use %lf for double value

X = [NSString stringWithFormat:@"%lf", [abc doubleValue] - [xyz doubleValue]];

Hope this will help you.

%d is for integers so you'll get some funky output passing in a double or float. Try this instead:

NSString *str = [NSString stringWithFormat:@"%f", [abc doubleValue] - [xyz doubleValue]];

%d means integer. Use %f. Read up on format specifiers.