Variable scoping and globs and reference passing to subroutines!!!

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1    #!/usr/bin/perl 
2    
...
48    
49        return;
50    }

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gas_capacity=14
...
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gas_capacity=14
gas_pr=3.59

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gas_capacity=14
...
gas_capacity=14
filled_up=12.3
gas_pr=3.59

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