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loop.c
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43 lines (41 loc) · 919 Bytes
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/* https://cirosantilli.com/linux-kernel-module-cheat#c
*
* Loop and print an integer whenever a period is reached:
*
* ....
* ./loop.out [max=10 [period=1]]
* ....
*
* * period: period for printing integers to stdout
* 0 means disable printing.
* * max: Stop counting when max is reached.
* 0 means count to infinity.
*/
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
uintmax_t i, j, period, max;
if (argc > 1) {
max = strtoumax(argv[1], NULL, 10);
} else {
max = 10;
}
if (argc > 2) {
period = strtoumax(argv[2], NULL, 10);
} else {
period = 1;
}
i = 0;
j = 0;
while (1) {
if (period != 0 && i % period == 0) {
printf("%ju\n", j);
j++;
}
i++;
if (i == max)
break;
}
}