Convert time difference into seconds?
I am writing an alarm clock program. Basically, it takes a time from the user and converts the difference between that time and the current into seconds. However, this function only returns the number of seconds the user gives. That is to say, it never seems to execute the if statements.
There is probably a better way to achieve the time difference conversion; I would be open to suggestions.
Enter the hour- 12
Enter the minute- 00
Enter the seconds- 00
Sat Aug 13 12:00:00 2011
Total number of seconds = 0
This is the current time ===> Sat Aug 13 11:58:19 2011
int TimeDifference(time_t time, time_t now)
int Hour, Min;
long int Sec;
struct tm *currentTime;
currentTime = localtime (&now);
struct tm *timeinfo;
timeinfo = localtime (&time);
Sec = timeinfo->tm_sec;
if (currentTime->tm_min != timeinfo->tm_min)
Min = (timeinfo->tm_min - currentTime->tm_min);
Sec += (Min * 60);
if (currentTime->tm_hour != timeinfo->tm_hour)
Hour = (timeinfo->tm_hour - currentTime->tm_hour);
Sec += (Hour * 60 * 60); //to minutes then to seconds
printf("Total number of seconds = %li", Sec);