What can I do in this case?

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

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

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

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

?