C Library Function – difftime()
The difftime() is a C Library function that returns the difference in time, in seconds(i.e. ending time – starting time). It takes two parameters of type time_t and computes the time difference in seconds. The difftime() function is defined inside the <time.h> header file.
The syntax of difftime() function is as follows:
double difftime(time_t time2, time_t time1);
The difftime() function takes two parameters:
- time1: Lower bound of the time interval whose length is calculated.
- time2: Higher bound of the time interval whose length is calculated.
where time1 and time2 are variables of type time_t which is a predefined structure for calendar times.
- Returns the difference between time1 and time2 (as measured in seconds).
Example of difftime() in C
(sec = 1; sec <= 6; sec++)
"Difference is %.2f seconds"
Difference is 6.00 seconds
Exception in difftime()
- It never throws an exception.
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