Build a Fraction Class (OOP)

Problem

Design a `Fraction` class with a constructor, `+`, and `operator<<`. Auto-simplify to lowest terms using GCD.

Input

Not applicable — demonstrate with fixed test cases inside main.

Output

Simplified fractions as `p/q`.

Constraints

Numerator + denominator ≤ 10^9

Sample input

(hardcoded: 1/2 + 1/3)

Sample output

5/6

Explanation

1/2 + 1/3 = 3/6 + 2/6 = 5/6; already simplified.

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Visible test cases

in: (1/2 + 1/3)

out: 5/6

Your solution — run it, use AI if stuck

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