Convert a string in the 24h format HH:mm:ss to time_t

StringToTime.h

#include <time.h>
#include <string>
#include <stdlib.h>

inline time_t StringToTime(std::string time_24h) {

    time_t theTime = time(NULL);
    struct tm *aTime = localtime(&theTime);

    std::string delimiter = ":";

    size_t pos = 0;
    std::string token;
    while ((pos = time_24h.find(delimiter)) != std::string::npos) {
        token = time_24h.substr(0, pos);
        aTime->tm_hour = atoi(token.c_str());
        time_24h.erase(0, pos + delimiter.length());
    }
    aTime->tm_min = atoi(time_24h.c_str());
    aTime->tm_sec = 0;

    return mktime(aTime);

}