实验任务5

#include <stdio.h>
int main()
{
  int year;
  double year1=1000000000.0/365.0/24.0/3600.0;
  double year2=year1;
  while(year2>=1){
      year2--;
  }
  if(year2>=0.5){
      year=int(year1)+1;
  }
  else{
      year=int(year1);
  }
  printf("10亿秒约等于%d年\n", year);
  return 0;
}