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计算出来的天数不正确,请问哪里出了问题?
- #include <stdio.h>
- #include <time.h>
- void leap_years(int time_s,int *leap)
- {
- int day_remainder = (time_s % (3 * 365 * 86400 + 366 * 86400)) / 86400;//get the remainder day of four year
- if (day_remainder >= 0 && day_remainder < 365)
- {
- *leap = 0;
- }
- else if (day_remainder >= 365 && day_remainder < (365 * 2))
- {
- *leap = 1;
- }
- else if (day_remainder >= (365 * 2) && day_remainder < (365 * 2 + 366))
- {
- *leap = 2;
- }
- else
- {
- *leap = 3;
- }
- }
- void cal_second_remainder(int time_s,int *second_remainder)
- {
- int leap;
- leap_years(time_s,&leap);
- switch(leap)
- {
- case 0:*second_remainder = time_s % (3 * 365 * 86400 + 366 * 86400);break;
- case 1:*second_remainder = time_s % (3 * 365 * 86400 + 366 * 86400) - 365 * 86400;break;
- case 2:*second_remainder = time_s % (3 * 365 * 86400 + 366 * 86400) - 365 * 2 * 86400;break;
- case 3:*second_remainder = time_s % (3 * 365 * 86400 + 366 * 86400) - (365 * 2 + 366) * 86400;break;
- }
- }
- void calculate_year(int time_s,int *year)
- {
- int leap;
- leap_years(time_s,&leap);
- *year = 4 * (time_s / (3 * 365 * 86400 + 366 * 86400)) + 1970 + leap;
- }
- void calculate_day(int time_s,int *day)
- {
- int second_remainder;
- cal_second_remainder(time_s,&second_remainder);
- *day = second_remainder / 24 * 60 * 60;
- }
- void calculate_hour_minute(int time_s,int *hour,int *minute)
- {
- int day,second_remainder,leap,second;
- calculate_day(time_s,&day);
- cal_second_remainder(time_s,&second_remainder);
- second = second_remainder - day * 24 * 60 * 60;
- *hour = second / 60 * 60;
- *minute = second / 60;
- }
- int main()
- {
- int time_s = time(NULL);
- int year,day,hour,minute;
- calculate_year(time_s,&year);
- calculate_day(time_s,&day);
- calculate_hour_minute(time_s,&hour,&minute);
-
- printf("senconds:%i\n",time_s);
- printf("year:%i\n",year);
- printf("day:%i\n",day);
- printf("hour:%i\n",hour);
- printf("minute:%i\n",minute);
- return 0;
- }
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计算天数的代码中有几个地方出了问题。
1. 在函数`calculate_day`中,计算天数的公式应该是除以86400而不是乘以86400。 - *day = second_remainder / (24 * 60 * 60);
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2. 在函数`calculate_hour_minute`中,计算小时和分钟的公式也出错了。应该用取余操作符`%`而不是整除操作符`/`。 - *hour = second / (60 * 60);
- *minute = (second % (60 * 60)) / 60;
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修改以上两处错误后,你的代码应该可以正确计算出天数、小时和分钟了。
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