12.45: The `sprintf' Command

`sprintf \synonym "format" .variable. [.variable. [...]]'

Write numbers into a synonym (text string). This is useful for labelling plots.

`sprintf \out "a = %lf b = %.2f" .a. .b.' - Create a synonym called `\out', and print the values of the variables `.a.' and `.b.' into it. If `.a.' = 1 and `.b.' = 0.112, then `\out' will be `"a = 1 b = 0.11"'

Formatting codes are as in the C programming language, eg:

%.2f -- Use floating point with 2 decimal places. %9.2f -- As above, but number takes 9 characters. %e -- Use exponential notation.

CAUTION: Variables are stored in the floating point in Gri, so you must use a format like `"%f"', not an integer code like `"%d"'.