reffactoring for more test

main.c

@@ -1,22 +1,82 @@
 #include <stdio.h>
+#include <string.h>
 #include "rabbit_hole.h"
 #include "mt19937ar.h"
 
-int main(void) {
-    init_genrand(42);
-    printf("===========Rabbit Hole Simulation =============\n");
+#define N_DRAW (10000)
+
+/* Mode run : init 10 males / 10 femelles matures, simulation sur 80 ans. */
+static void run_mode(void) {
     rabbit_hole_t rabbits;
     init_rabbits(&rabbits);
     rabbits.male_mature[0] = 10;
     rabbits.female_mature[0] = 10;
     __uint128_t month = 0;
-    print_rabbits(&rabbits,&month);
     csv_header();
-    for (int j = 0; j < 12*80 ; j++) {
+
+    for (int j = 0; j < 12*80; j++) {
         if (!process_month(&rabbits,&month))
             break;
-        print_rabbits(&rabbits,&month);
+        //print_rabbits(&rabbits,&month);
     }
+}
+
+/* Mode stats : 10000 tirages, init 1 male / 1 femelle, 10 ans chacun. */
+static void stats_mode(void) {
+    rabbit_hole_t rabbits;
+    __uint128_t month = 0;
+    int good = 0;
+    __uint128_t total = 0;
+    for (int i = 1; i <= N_DRAW; i++) {
+        init_rabbits(&rabbits);
+        rabbits.male_mature[0] = 1;
+        rabbits.female_mature[0] = 1;
+        for (int j = 0; j < 12*10; j++) {
+            if (!process_month(&rabbits,&month))
+                break;
+            //print_rabbits(&rabbits,&month);
+        }
+        total_rabbits(&rabbits,&total);
+        if (total > 0)
+            good++;
+    }
+    puts("#############################");
+    printf("taux de lancement reussi: %f\n",(double)good/N_DRAW);
+}
+
+static void print_usage(const char *prog) {
+    fprintf(stderr, "Usage: %s [-r | -s] [--csv]\n", prog);
+    fprintf(stderr, "  -r  mode run : simulation sur 80 ans (par defaut)\n");
+    fprintf(stderr, "  -s  mode stats : 10000 tirages de 10 ans\n");
+    fprintf(stderr, "  --csv  activer la sortie CSV sur stderr (desactive par defaut)\n");
+}
+
+int main(int argc, char **argv) {
+    init_genrand(42);
+
+    int run = 1; /* mode run par defaut si aucun argument */
+    int csv = 0;
+    if (argc > 1) {
+        for (int i = 1; i < argc; i++) {
+            if (strcmp(argv[i], "-s") == 0)
+                run = 0;
+            else if (strcmp(argv[i], "-r") == 0)
+                run = 1;
+            else if (strcmp(argv[i], "--csv") == 0)
+                csv = 1;
+            else {
+                print_usage(argv[0]);
+                return 1;
+            }
+        }
+    }
+    set_csv_enabled(csv);
+
+    printf("===========Rabbit Hole Simulation =============\n");
+    if (run)
+        run_mode();
+    else
+        stats_mode();
 
     return 0;
 }