Factorial in AWK

Example for versions Jawk 1.02, gawk 3.1.6, mawk 1.3.3

This example uses iterative factorial definition. Individual statements within code block can be separated with semicolons (;) or new lines. 

BEGIN {
    f = 1
    print "0! = " f
    for (i=1; i<17; i++) {
        f *= i
        print i "! = " f
    }
}