Reference vs Pointer on the Same Counter

A reference ref and a pointer ptr are already declared and both refer to the same count. The program reads one integer from input. Then:
1. add 5 to count using the reference ref
2. multiply count by 2 using the pointer ptr

For the input:
10

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

With an input of -3 the output must be After reference: 2 and After pointer: 4.

Expected Output:

After reference: 15↵
After pointer: 30↵

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

Hints2 available

Topics:

Pointers

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