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- #include <unistd.h>
- #include <stdio.h>
- #include <time.h>
- int main()
- {
- time_t start, stop;
- double seconds;
- /* leggo il tempo */
- start = time(NULL);
- printf("start = %ld\n", start);
- /* attendo 3 secondi */
- sleep(3);
- /* rileggo il tempo */
- stop = time(NULL);
- printf("stop = %ld\n", stop);
- /* calcolo la differenza */
- seconds = difftime(stop, start);
- printf("Tempo trascorso = %g\n", seconds);
- return 0;
- }
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