Viewing Fortran Data Types in the Microsoft Debugger

Specifying Array Sections

You can specify array sections in a Watch window. For example, consider an array declared as:

  integer foo(10)

You can specify the following statement in a Watch window to see the 2nd, 5th, and 8th elements:

  foo(2:10:3)

When working with character arrays, this syntax may be combined with a substring specification. Consider the following array declaration:

  character*8 chr_arr(10)

You can specify the following statement in a Watch window to display the substring made up of character 3 through 8 of array elements 2 through 5:

  chr_arr(2:5)(3:8)

This support is available for arrays of any type, including array pointers, assumed-shape, allocatable, and assumed-size arrays.

Any valid integer expression can be used when specifying lower bound, upper bound, or stride. If the lower bound is omitted, the array lower bound is used. If the upper bound is omitted, the array upper bound is used. For example, consider the following declaration:

  integer foo(10)

To display:

• Elements 1 through 8, specify foo(:8)

• Elements 5 through 10, specify foo(5:)

• All 10 elements, specify foo(:)

Specifying Module Variables

To view a module variable in a Watch window, specify the module name, followed by "::", followed by the variable name.

For example, to watch variable "bar" of module "foo", specify the following expression:

foo::bar

Specifying Format Specifiers

You can use format specifiers in Watch windows to display variables in different data formats.

For example, given a REAL variable 'foo' in a program, it is now possible to see 'foo' in different floating point notation (by typing "foo,f" "foo,g" or "foo,e" in a Watch window) or as an integer ("foo,i" or "foo,d"), a hexadecimal value ("foo,x"), an an octal value ("foo,o"), and so on.

You can change the display format of variables in a Watch window using the formatting symbols in the following table:

To use a formatting symbol, type the variable name, followed by a comma and the appropriate symbol. For example, if var has a value of 0x0065, and you want to see the value in character form, type var,c in the Name column on the tab of the Watch window. When you press ENTER, the character-format value appears:

  var,c = 'e'

You can use the formatting symbols shown in the following table to format the contents of memory locations:

With the memory location formatting symbols, you can type any value or expression that evaluates to a location.

A formatting character can also follow an expression:

  rep+1,x
  xloc,g
  count,d