“隐式转换失去整数精度:’time_t’(又名’long’)到’unsigned int’” 您正在隐式丢失精度,因为 time() 返回一个 long 大于目标上的 unsigned int 。为了解决这个问题,您应该明确地转换结果(从而消除“隐式精度损失”): srand( static_cast<unsigned int>(time(nullptr))); 鉴于现在是 2017 年,我正在编...
You're losing precision implicitly because time() returns a long which is larger than an unsigned int on your target. In order to workaround this problem, you should explicitly cast the result (thus removing the "implicit precision loss"): srand( static_cast<unsigned int>(ti...
srand(static_cast<unsigned int>(time(0))); } rand();使用rand()的函数rand()位于调用srand()的位置之外。所以我的问题是--如果你用rand( 浏览0提问于2014-09-25得票数 9 回答已采纳 2回答 在php中,rand()依赖于时间吗? 、 让我们解释一下我的意思。不久前,在用c#编写程序时,我犯了以下...
struct timeb tp; ftime(&tp); srand(static_cast<unsigned int>(getpid()) ^ static_cast<unsigned int>(pthread_self()) ^ static_cast<unsigned int >(tp.millitm)); For better random quality, use /dev/urandom. You can make the above code portable in using boost::thread and boost::date_...