代码
void getNowTimePrefix ( std:: string& prefix)
{ std:: time_t nowTime; struct tm * p = new tm; std:: time ( & nowTime) ; localtime_s ( p, & nowTime) ; int year = p-> tm_year + 1900 ; int month = p-> tm_mon + 1 ; int day = p-> tm_mday; int hour = p-> tm_hour; int minute = p-> tm_min; int second = p-> tm_sec; delete p; prefix = std:: to_string ( year) + std:: string ( 2 - std:: to_string ( month) . length ( ) , '0' ) + std:: to_string ( month) + std:: string ( 2 - std:: to_string ( day) . length ( ) , '0' ) + std:: to_string ( day) + "_" + std:: string ( 2 - std:: to_string ( hour) . length ( ) , '0' ) + std:: to_string ( hour) + std:: string ( 2 - std:: to_string ( minute) . length ( ) , '0' ) + std:: to_string ( minute) + std:: string ( 2 - std:: to_string ( second) . length ( ) , '0' ) + std:: to_string ( second) ;
}
用法
# include <iostream>
using namespace std; int main ( )
{ std:: string nowTimePrefix; getNowTimePrefix ( nowTimePrefix) ; cout << nowTimePrefix << endl; return 0 ;
}
结果