Character to Real conversion-Fortran90

[stearns]

I have a program that scans a text file and finds strings in a certain column that look like numbers, ie 100.3, it grabs these strings and prints them out.Now I want to use the same routine, but once the character string is found, ie 100.3, I would like to assign it to a real variable so I can use it in a math expression.. Can this be done?

[TimP]

This could be as simple as

READ(charstr,*)realval

The "rules and restrictions" in Adams, Brainerd et al are in the section titled "Data Transfer on Internal Files."

Examples of Internal File I/O appear in the Intel compiler .pdf manual.

[vinicius_reis]

And what do I do If I want do to exactly the opposite?

[Steven_L_Intel1]

WRITE (STRING,*) variable....

The * can be an explicit format as well.

This is called "Internal I/O" and is a standard language feature of Fortran. You can read about it in the Intel Fortran Language Reference.

[vinicius_reis]

Sorry, but with opposite I meant read a real variable and pass its value to a string.

[Steven_L_Intel1]

I understood - that's what I described above.

The way one does this sort of thing in Fortran is to pretend you are writing to or reading from a file, except that the character variable takes the place of the unit number.

[vinicius_reis]

Got the idea! Thanks very much!