Because in an under-constrained problem there could be multiple solutions. So suppose I want to capture all of them or print all of them out.

因为在一个非约束性问题中,可能会有多组答案,所以假设我想把它们,全部获取或者全部输出。

麻省理工公开课 - 计算机科学及编程导论课程节选

int A Well, one, function has called swap, takes one int called A, printf followed by another int called B, and as we've seen with print F, if you have multiple arguments, you separate them by commas.

好的，函数叫做swap，一个参数是，另一个参数是int，B，我们看到的,如果你有好几个参数，把它们用逗号分开。

哈佛公开课 - 计算机科学课程节选