Mina and Her Smart Sister

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Minalochani Aragasundaram is teaching her little sister addition and subtraction. But it turns out that her little sister is already very smart and wants to challenge her in a game. She said, the game is simple, I give you 2 numbers, $A$ and $B$ followed by a $‘+’$ or $ ‘- ‘$ sign. You must give me the correct answer according to the sign, $A+B$ or $A-B$. Can you please help Minalo

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solution.cppC++17

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