The function pointer is passed fine, it's only converted to 1 for printing (which is why the warning relates to the line where you print it, not the line where you pass it).

函数指针传递好，只有转化为1印刷（这就是为什么警告与你打印它的行，而不是你通过行）。

youdao

Be careful in business on Monday. Go over all the specifics and make sure you're well-versed in the fine print before you scrawl your signature across the line.

周一时做买卖要小心了，在你落笔签下潇洒的签名之前，要仔细看好印刷精美的合同的每个角落，确定你足够精明。

youdao

Bottom line: Moving parts can add value, but please always remember to read the fine print.

FORBES: Bonds With Moving Parts