“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...
srand(time(NULL) +1000*getpid() + (uint)getCpuSerialNumber()); 在Linux 机器中(至少在我测试过的 Raspberry Pi 中),您可以实现以下函数来获取 CPU 序列号: // Gets the CPUSerialNumberasa64bitunsignedint.Returns0ifnotfound. uint64_t getCpuSerialNumber() { ...
std::srand(static_cast<unsigned int>(std::time(nullptr))); for (int count=1; count <= 100; ++count) { std::cout << std::rand() << "\t"; // display 5 random numbers per row if (count % 5 == 0) std::cout << "\n"; } return 0; } Output: In the above program, we...
#include <iostream>#include <chrono>#include <random>unsignedget_random(unsignedmin,unsignedmax ) {thread_localstd::ranlux48 prng( std::chrono::system_clock::now().time_since_epoch().count() ); std::uniform_int_distribution <unsigned> dist( min, max );returndist( prng ); }unsignedget...
intmain(void){// seed pseudorandom number generatorsrand48(time(NULL));// instantiate windowGWindow window = newGWindow(WIDTH, HEIGHT);// instantiate bricksinitBricks(window);// instantiate ball, centered in middle of windowGOval ball = initBall(window);// instantiate paddle, centered at bot...
“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...