WebApr 6, 2024 · C语言的基础知识,包括如何编写、编译和运行C程序。 2. 如何使用C语言的图形库,例如OpenGL或者SDL来在屏幕上画图。 3. 如何使用C语言的键盘输入函数,例如getch()或者kbhit()来接收玩家的输入。 4. 如何使用C语言的定时器函数,例如sleep()或者clock()来控制游戏的 ... WebApr 16, 2014 · The function time returns a time_t value, while srand expect an unsigned int argument. Without the cast, the compiler may produce a warning and depending on …
c语言rand()函数(c语言rand函数的使用方法)_草根科学网
WebDec 12, 2014 · The standard doesn't define what type time_t is; it only has to be a real type capable of representing times. It could be an integer type or a floating-point type (it can't be complex -- fortunately). And it's not necessarily a number of seconds, or milliseconds, or any simple units. It could in principle use ranges of bits to represent months, seconds, days, … WebFeb 9, 2024 · It might not be unsigned but signed. The static_cast is there to suppress the possibility of an error/warning if std::time_t is defined as something else as unsigned int. Note that this isn't actually good practice. P.S If you have a compiler that supports C++11 then stop using rand ()/srand () all together and start using the new header . maxi tpms scanner
std::srand - cppreference.com
WebDec 12, 2014 · 若unsigned int双字节是65535,且0-RAND_MAX每个数字被选中的随机率是相同的。 rand()产生的是假随机数,每次执行时是相同的,若要不同以不同的值来初始化,初始化的函数就是srand()。 ... (unsigned)time(0))或者srand((unsigned)time(NULL))来产生种子,如果觉得时间间隔太小 ... WebOct 12, 2014 · 在c语言中,碰到这句函数:srand((unsigned int)time(NULL))的理解: 目录: 1srand与rand的关系: 2time函数的用法: 3 取任意数 1. srand与rand的关 … WebNov 20, 2024 · Srand是种下随机种子数,你每回种下的种子不一样,用Rand得到的随机数就不一样。 为了每回种下一个不一样的种子,所以就选用Time (0),Time (0)是得到当 … maxitpms software