Let $G=\\{z\in \mathbb{C}:z^n=1$ for some positive integer $n\\}$. Then $G$ with complex multiplication is an infinite abelian group but every element has finite order.
Let $G=\\{z\in \mathbb{C}:z^n=1$ for some positive integer $n\\}$. Then $G$ with complex multiplication is an infinite abelian group but every element has finite order.