The C library function difftime() returns the difference, in seconds between starting time and ending time.(ending time-starting time)
// It is present in time.h header file
#include
Syntax :
double difftime(time_t time2, time_t time1);
Parameters:
time1 : Lower bound of the time interval
whose length is calculated.
time2 : Higher bound of the time interval
whose length is calculated.
Return value :
Returns the difference between time1 and
time2 (as measured in seconds).
// C program to demonstrate working of // difftime() #include <time.h> #include <stdio.h> #include <unistd.h> int main() { int sec; time_t time1, time2; // Current time time(&time1); for (sec = 1; sec <= 6; sec++) sleep(1); // time after sleep in loop. time(&time2); printf("Difference is %.2f seconds", difftime(time2, time1)); return 0; } |
Output:
Difference is 6.00 seconds
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