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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <fcntl.h>
  4. #include <unistd.h>
  5. #include <sys/types.h>
  6. #include <sys/stat.h>
  7.  
  8. int main() {
  9.     int fd;
  10.     unsigned int seed;
  11.     // 打开/dev/urandom设备文件
  12.     fd = open("/dev/urandom", O_RDONLY);
  13.     if (fd == -1) {
  14.         perror("无法打开/dev/urandom");
  15.         return 1;
  16.     }
  17.     // 从设备文件中读取4个字节作为种子
  18.     if (read(fd, &seed, sizeof(seed))!= sizeof(seed)) {
  19.         perror("无法读取随机种子");
  20.         close(fd);
  21.         return 1;
  22.     }
  23.     close(fd);
  24.     srand(seed);
  25.     // 这里可以继续进行猜数字游戏的其他部分，例如生成随机数并开始游戏
  26.     int number_to_guess = rand() % 100 + 1;
  27.     //...（省略猜数字游戏的其他代码）
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 5284KB
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https://ideone.com/b2RJXx
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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