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28 lines
757 B
Raku
28 lines
757 B
Raku
#!/usr/local/bin/perl
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$inputline = <STDIN>;
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$inputline =~ s/^\s+|\s+$//g;
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@list = split (/\s+/, $inputline);
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$result = &rightcalc (0);
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print ("The result is $result.\n");
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sub rightcalc {
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my ($index) = @_;
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my ($result, $operand1, $operand2);
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if ($index+3 == @list) {
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$operand2 = $list[$index+2];
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} else {
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$operand2 = &rightcalc ($index+2);
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}
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$operand1 = $list[$index+1];
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if ($list[$index] eq "+") {
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$result = $operand1 + $operand2;
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} elsif ($list[$index] eq "*") {
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$result = $operand1 * $operand2;
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} elsif ($list[$index] eq "-") {
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$result = $operand1 - $operand2;
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} else {
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$result = $operand1 / $operand2;
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}
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} |