Write a C program to implement digital clock.
#include <time.h>
int main() {
time_t ts, flag = 1;
struct tm *ct;
system("clear");
printf("\n\n\n\tDIGITAL CLOCK\n\t ");
/* digital clock implementation */
while (1) {
/* time() - gives time in seconds */
ts = time(NULL);
/* converting time(NULL) o/p to min, sec, hours */
ct = localtime(&ts);
/* print the digital clock */
if (flag || ct->tm_min % 59 == 0) {
if (!flag)
printf("\b\b\b\b\b\b");
printf("%02d:%02d:%02d",
ct->tm_hour, ct->tm_min, ct->tm_sec);
flag = 0;
printf("\b\b");
continue;
}
if (ct->tm_sec % 59 == 0) {
printf("\b\b\b");
printf("%02d:", ct->tm_min);
}
printf("%02d", ct->tm_sec);
printf("\b\b");
}
return 0;
}
Output:
18:38:15
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