Hi all,
I want to output numbers in scientific notation eg 1.2345E-06, but I want the number to start with "0." eg 0.12345E-05.
I cannot find any option for the format specifier and all I can think of is to convert the first part to string (eg 1.2345), add a "0." on the printf statement, and then add 1 (integer) to the second part after the E (eg -06+1).
This is far from elegant way of doing this, so do you have any recomendations on any other way?
Thanks
Spiros
The only way to do that is to write the number out and then maybe the number will be 0.1234...
In correct scientific notation, the first digit must be nonzero, so there is no reason you should need to worry about this.
Try this.
Code:char holder[MAX_PATH]; float i=//Make it equal what ever you want to scientfic notation.// sprintf(holder,"%E",i); //Also you can make the E small doing this. sprintf(holder,"%e",i); same thing different case //Example output// 3.9265e2 or 3.9265E2
Last edited by unkownname; 05-12-2006 at 05:03 PM.
Its Really All up to you.
integers do not work that way. Use a double.
But this writes a float in scientific notation. The %f identifier writes floats and doubles out.Code:double num = 1.456e-5; printf("%e\n", num);
Code:double num = 1.456e-5; printf("%f\n", num);
Last edited by whiteflags; 05-12-2006 at 05:25 PM.
Oh Alright it was just a shot I never tried it out.
Its Really All up to you.
thanks guys, I'll try your suggestions.
I am fully aware that this notation is not correct (I'm doing a PhD in mechanical engneering/maths...), but there is a program (in FORTRAN) that I am using which uses a large database of numbers. In there, every number starts with "0." and because I am adding numbers to that database, I just want to be consistent with how these numbers are presented.
Spiros
