如果我最终将SELECT av_sig_ver
,CONVERT(SUBSTRING_INDEX(av_sig_ver,'.',-2),UNSIGNED INTEGER) AS 'one_av_sig_ver'
,CONVERT(SUBSTRING_INDEX(av_sig_ver,'.',-3),UNSIGNED INTEGER) AS 'two_av_sig_ver'
,COUNT(NULLIF(TRIM(av_sig_ver), '')) AS 'total'
FROM `test`.`test_fep_signatures`
GROUP by av_sig_ver
ORDER BY two_av_sig_ver DESC, one_av_sig_ver DESC;
的值更改为int main(){
int month1, day1, year1, day2, month2 = 0, year2 = 0, earliestDay = 32, earliestMonth = 13 , earliestYear=3000;
printf("Enter a date (mm/dd/yy): ");
scanf("%d/%d/%d", &month1, &day1, &year1);
while (1){
printf("Enter a date (mm/dd/yy): ");
scanf("%d/%d/%d", &month2, &day2, &year2);
if((day1 ==0 && month1 && year1 ==0) || (day2 == 0 && month2== 0 && year2 ==0))
break;
if ( day1 < day2)
earliestDay = day1;
if (month1 < month2)
earliestMonth = month1;
if (year1 <= year2)
earliestYear = year1;
}
printf("%d/%d/%d is the earliest date!\n", earliestMonth, earliestDay, earliestYear);
}
，为什么方法会返回true？
r