c++ - 您如何使用 rand() 函数每次都提出不同的问题？

Question

什么代码用于此类问题？另外，您将 rand() 的代码放在顶部还是底部？

Answer 1

Normally you call srand(time(NULL)); once (and only once) as the program is starting up.

To ask different questions, you'd normally get a random number with rand, reduce it to the range of the number of questions, and use that to select one of the questions.