Double a Temperature Through a Pointer

The program reads one integer temperature from input, and a pointer p that points at it is already set up. Use p (not the variable name temp) to double the stored value.

For the input:
21

the expected output is exactly what is shown in Expected Output.

Negative values must work too: an input of -8 must print Before: -8 and After: -16.

Expected Output:

Before: 21↵
After: 42↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Pointers

Code Editor

Tab to indent (Esc then Tab to move on) · Ctrl+Enter to run · Shift+Alt+F to format · Ctrl+Space to expand shortcuts (cout, fori)

Your Output

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Test Cases

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