Fortran Wiki
ichar (Rev #1, changes)

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Description

ichar(c) returns the code for the character in the first character position of c in the system’s native character set. The correspondence between characters and their codes is not necessarily the same across different GNU Fortran implementations.

Standard

Fortan 95 and later, with kind argument Fortran 2003 and later

Class

Elemental function

Syntax

result = ichar(c [, kind])

Arguments

c - Shall be a scalar character, with intent(in)
kind - (Optional) An integer initialization expression indicating the kind parameter of the result.

Return value

The return value is of type integer and of kind kind. If kind is absent, the return value is of default integer kind.

Example

program test_ichar
 integer i
 i = ichar(' ')
end program test_ichar

Note

No intrinsic exists to convert between a numeric value and a formatted character string representation – for instance, given the character value '154', obtaining an integer or real value with the value 154, or vice versa. Instead, this functionality is provided by internal-file I/O, as in the following example:

program read_val
 integer value
 character(len=10) string, string2
 string = '154'
 ! Convert a string to a numeric value
 read (string,'(I10)') value
 print *, value
 ! Convert a value to a formatted string
 write (string2,'(I10)') value
 print *, string2
end program read_val

Fortran Wiki ichar (Rev #1, changes)