difftime

Remonter à Time.h - Index

Header File

time.h

Category

Time and Date Routines

Prototype

double difftime(time_t time2, time_t time1);

Description

Computes the difference between two times.

difftime calculates the elapsed time in seconds, from time1 to time2.

Return Value

difftime returns the result of its calculation as a double.

Example

 #include <time.h>
 #include <stdio.h>
 #include <dos.h>
 #include <conio.h>
 int main(void)
 {
    time_t first, second;
    clrscr();
    first = time(NULL);  /* Gets system
                            time */
    delay(2000);         /* Waits 2 secs */
    second = time(NULL); /* Gets system time
                            again */
    printf("The difference is: %f seconds\n",difftime(second,first));
    getch();
    return 0;
 }

Portability

POSIX	Win32	ANSI C	ANSI C++
+	+	+	+