fetcharg

#fetcharg

##Syntax fetcharg ( i : int ) : string

##Description The fetcharg function is used to access the i-th argument that has been passed to a program from the command line. For example, if the program is run from the Turing environment using

:r file1 file2

then fetcharg(2) will return "file2". If a program called prog.x is run under UNIX using this command:

prog.x file1 file2

the value of fetcharg(2) will similarly be "file2".

The nargs function, which gives the number of arguments passed to the program, is usually used together with the fetcharg function. Parameter i passed to fetcharg must be in the range 0 .. nargs.

The 0-th argument is the name of the running program.

##Example This program lists its own name and its arguments.

    put "The name of this program is : ", fetcharg ( 0 )
    for i : 1 .. nargs
        put "Argument ", i, " is ", fetcharg ( i )
    end for

##See also nargs.html