Fortran Inputting a Complex Number in Fortran 90 for DeMoivre's Theorem

[waver.]

i have a a little problem in fortan90 i just wanted to know how to input a complex number ( input real and img part alone ) all i want to do is to make a simple program about DeMoivres Theorem i have been around in google
all i know how to declare a argument as complex
complex a
then how to let the user input the real and img part for argument a
i did read(*,*)a
every time it give runtime error :)
thanks in advance

 

[jedishrfu]

Here's a StackOverflow refernce to reading in complex numbers from file:

http://stackoverflow.com/questions/...x-array-and-vector-from-txt-file-in-fortran90.

Notice in the code there is no special significance to the real and imaginary part only that one follows the other in the input.

They are then combined using the complex function into a single number that can be processed by your program.

 

[gsal]

A google search with fortran90 and complex returned quite a few links.

In any case, if you want to read a complex number straight into variable 'a', for example, as you show above, you need to enter your value as a complex number, i.e., enclosed in parenthesis, in other words, you type, say, "(1.43, 22.3)"

 

[waver.]

thanks guys for helping specially gsal i used your idea and its works thank a lot