learn "_stscanf_s"

#define _stscanf_s      sscanf_s

sscanf_s

msdn: Read formatted data from a string.

int sscanf_s(
   const char *buffer,             //stored data
   const char *format [,
      argument ] ...
);
Return value is the number of fields successfully.

eg:

char temp = "15 12 14...";

char var[4];

char c;

int i;

float f;

sscanf_s(temp, "%s", var, _countof(var));      //15

sscanf_s(temp, "%c", c, sizeof(char));            //1        

sscanf_s(temp, "%d", &i);                              //15

sscanf_s(temp, "%f", &f);                              //15.000000

 

string time("2016-01-07_14:58:23");

tm stm = {0};

sscanf_s(time.c_str(), "%4d-%2d-%2d_%2d:%2d:%2d",

          &stm.tm_year, &stm.tm_mon, &stm.tm_mday,

          &stm.tm_hour, &stm.tm_min, &stm.tm_sec);