Biorhythms: Difference between revisions

=={{header|C}}==

{{trans|Locomotive Basic}}

<lang c>#include <stdio.h>

#include <stdlib.h>

#include <math.h>

long day(int y, int m, int d) {

return 367 * y - 7 * (y + (m + 9) / 12) / 4 + 275 * m / 9 + d - 730530;

}

void cycle(long diff, int l, char *t) {

float p = 100 * sin(2 * M_PI * diff / l);

printf("%12s cycle: %3.0f%%", t, round(p));

if (abs(p) < 15)

printf(" (critical day)");

printf("\n");

}

int main(int argc, char *argv[]) {

long diff;

if (argc < 7) {

printf("Usage:\n");

printf("cbio y1 m1 d1 y2 m2 d2\n");

exit(1);

}

diff = abs(day(atoi(argv[1]), atoi(argv[2]), atoi(argv[3]))

- day(atoi(argv[4]), atoi(argv[5]), atoi(argv[6])));

printf("Age: %u days\n", diff);

cycle(diff, 23, "Physical");

cycle(diff, 28, "Emotional");

cycle(diff, 33, "Intellectual");

}</lang>

Test:

<lang bash>gcc -o cbio cbio.c -lm

./cbio 1972 7 11 1943 3 9

Age: 10717 days

Physical cycle: -27%

Emotional cycle: -100%

Intellectual cycle: -100%</lang>