Initial data commit

Task/Biorhythms/C/biorhythms-1.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+int day(int y, int m, int d) {
+    return 367 * y - 7 * (y + (m + 9) / 12) / 4 + 275 * m / 9 + d - 730530;
+}
+
+void cycle(int diff, int l, char *t) {
+    int p = round(100 * sin(2 * M_PI * diff / l));
+    printf("%12s cycle: %3i%%", t, p);
+    if (abs(p) < 15)
+        printf(" (critical day)");
+    printf("\n");
+}
+
+int main(int argc, char *argv[]) {
+    int 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");
+}

Task/Biorhythms/C/biorhythms-2.c

@@ -0,0 +1,6 @@
+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%