MSC $110$: Computer Programming $2$ home $>3\mathrm{.}16$ : Application: Input Validation

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Suppose you are charged with writing a program that processes rat weights. We don't know for sure how giant a rat could be$,$ but the New Guinea rats weighed no more than $2kg.$ A regular house rat $($Rattus rattus$)$ weighs up to $0\mathrm{.}2kg,$ so we'll say that any weight $>10kg$ was surely an input error, perhaps confusing grams and kilograms. Of course, inputs should be positive numbers. Rearrange the following lines of code to supply error handling. Not all lines are useful.

How to use this tool

Unused

else if $($weight $0)$

$\{$

cout $$ "Error: Weight must be positive" $$ endl;

$\}$

if $(!$cin.fail$())$

else if $($cin$.$fail$())$

if $($cin$.$fail$())$

else

$\{$

$\{$

cout $$ "Error: Not a number" $$ endl;

$\}$

$\}$

else if $($weight $>10)$

$\{$

else if $($weight $0)$

int main$()$

$\{$

cout $$ "Enter weight in $kg$ : $"$ end l;

double weight;

cin $$ weight;

$\}$

#include $kg$