#...call to function
    &SomeFunction($a, $b, $c);

    #...in the function
    
    @args = ("$program $a $b $c");
    system(@args) == 0
        or die "system @args failed: $?";

##</code><code>##

    #...call to function
    &SomeFunction($a, $b, '$c');

    #...in the function
    
    @args = ("$program $a $b '$c'");
    system(@args) == 0
        or die "system @args failed: $?";