MadSci Network: Computer Science |
Hi! That is a structure which is being given a name of "tagBITMAPFILEHEADER". If you are more familiar with C++, this page http://msdn.microsoft.com/library/wcedoc/wcesdkr/uis_ad_4.htm from the Microsoft MSDN library might explain it better. It also explains what each member of the structure is for (better than I could anyway). So when you wanted to declare a "tagBITMAPFILEHEADER" later in your FORTRAN program, you could just use "tagBITMAPFILEHEADER" much like a typedef in C/C++. As for your second question, the D is the letter (which most likely stands for Double precision) which seperates the mantisa from the exponent. For example: 1.D0 = 1.00000 * 10 ^ 0 123.456D78 = 123.456000 * 10 ^ 78 This is a place holder you most likely have seen an "E" in on most calculators. Same thing. Hope this answers your questions!
Try the links in the MadSci Library for more information on Computer Science.