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exception question help!!

hilft (54)
why do I get a compilation error in the code below?
what do I do to fix the problem?

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  #include <iostream>
    #include <exception>
    
    using namespace std;
    
    int main() {
        try {
            throw 3.14;
        }
        catch(double x) {
            x *= 2;
        }
        cout << x;
        return 0;
    }
JockX (293)
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catch(double x) {
    x *= 2;
}
cout << x; // in this scope x is undeclared. cout it inside catch block
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