Simple calculator

Write a function @calculator(a, b, operator)@ to compute simple
arithmetic expressions. The function receives as arguments two numbers a
and b and a character @operator@ that is always either ’+’, ’-’ or ’*’.
The function has to return either the addition a + b, substraction a − b
or the multiplication a * b depending on the actual value of @operator@.

Sample session

Problem information

Author: ProAl

Generation: 2026-01-25T17:38:17.222Z

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