26 lines
603 B
C
26 lines
603 B
C
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#include <stdio.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/time.h>
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int main(int argc, char * argv[]) {
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struct timeval now, later;
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struct tm * timeinfo;
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int up, upa, upb, upc;
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FILE * uptime;
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gettimeofday(&now, NULL);
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uptime = fopen("/proc/uptime","r");
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fscanf(uptime, "%d.%2d", &up, &upa);
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fclose(uptime);
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sleep(5);
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gettimeofday(&later, NULL);
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uptime = fopen("/proc/uptime","r");
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fscanf(uptime, "%d.%2d", &upb, &upc);
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fclose(uptime);
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fprintf(stderr, "Before: %d, %d.%2d\n", now.tv_sec, up, upa);
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fprintf(stderr, "After: %d, %d.%2d\n", later.tv_sec, upb, upc);
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return 0;
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}
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