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The C statement: double &x; a) declares a variable named %x with type double b) declares...

The C statement:

double &x;

a) declares a variable named %x with type double

b) declares a variable named x that is located in the heap

c) double (multiples by 2) the value that is pointed to by x

d) causes a compilation error

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Answer #1 
The C statement:
double &x;
causes a compilation error

d) causes a compilation error

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