17 lines
411 B
C
17 lines
411 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int main(int argc, char *argv[]) {
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unsigned long num_seconds;
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if (argc != 2 || (num_seconds = strtoul(argv[1], NULL, 10)) == 0) {
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fprintf(stderr, "Usage: %s <seconds to sleep>\n", argv[0]);
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exit(1);
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}
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for (unsigned long i = 0; i < num_seconds; i++) {
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printf("%lu\n", i);
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sleep(1);
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}
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return 0;
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}
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