f Well, call toupper pass this lowercase F F to this function called toupper it's going to return capital F and so what do I assign to s2 bracket zero?

调用toupper函数，传递这个小写,然后返回的是大写的,那么我对s2【0】赋值多少？

哈佛公开课 - 计算机科学课程节选

It's passing to this function called toupper, which if you've never used it it actually does what it says it makes it touppercase.

它把这个传递给toupper函数，如果你们使用过，它表示的是把小写字母,转换为大写字母。

哈佛公开课 - 计算机科学课程节选