我使用以下方法验证日期。 如何用字符串格式化月份?
bool CDateTime :: IsValidDate(char* pcDate) //pcDate = 25-Jul-2012 15:08:23
{
bool bVal = true;
int iRet = 0;
struct tm tmNewTime;
iRet = sscanf_s(pcDate, "%d-%d-%d %d:%d:%d", &tmNewTime.tm_mon, &tmNewTime.tm_mday, &tmNewTime.tm_year, &tmNewTime.tm_hour, &tmNewTime.tm_min, &tmNewTime.tm_sec);
if (iRet == -1)
bVal = false;
if (bVal == true)
{
tmNewTime.tm_year -= 1900;
tmNewTime.tm_mon -= 1;
bVal = IsValidTm(&tmNewTime);
}
return bVal;
}
答案 0 :(得分:1)
使用strptime:
#include <time.h>
char *str = "25-Jul-2012 15:08:23";
struct tm tm;
if (strptime (str, "%d-%b-%Y %H:%M:%S", &tm) == NULL) {
/* Bad format !! */
}
答案 1 :(得分:-1)
C ++ 11的做法是:
#include <iostream>
#include <iomanip>
#include <ctime>
#include <chrono>
int main()
{
auto now = std::chrono::system_clock::now();
auto now_c = std::chrono::system_clock::to_time_t(now);
std::cout << "Now is " << std::put_time(std::localtime(&now_c), "%d-%b-%Y %H:%M:%S") << '\n';
}
注意:尚未在所有编译器中完全实现流I / O操纵器std::put_time
。例如,GCC 4.7.1没有它。