Needed this for my D&D games

MonteCarlo.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <stdbool.h>
+
+struct Simulation {
+    double betsize;
+    double STARTING_BANKROLL;
+    double bankroll;
+    int attempts;
+};
+
+int roll() {
+    return (random() % 7) + 1;
+}
+
+double handle(int player, int house) {
+    int diff = house - player;
+    if (diff >= 1) {return 0;}
+    else if (diff == -6) {return 2;}
+    else if (diff == 0) {return 0;}
+    else {return 1.5;}
+}
+
+bool calculate(struct Simulation* simulation) {
+    if (simulation->bankroll >= simulation->betsize) {
+        simulation->bankroll -= simulation->betsize;
+        int player_roll = roll();
+        int house_roll = roll();
+        double modifier = handle(player_roll, house_roll);
+        simulation->bankroll += (modifier * simulation->betsize);
+        simulation->attempts++;
+        return false;
+    } else {return true;}
+}
+
+void run(struct Simulation* simulation, int attempts) {
+    for (int i = 0; i < attempts; i++) {
+        bool bankrupt = calculate(simulation);
+        if (bankrupt) {
+            break;
+        }
+    }
+}
+
+int main() {
+    srandom(time(NULL));
+    struct Simulation new_simulation;
+    new_simulation.betsize = 20;
+    new_simulation.STARTING_BANKROLL = 5000000000;
+    new_simulation.bankroll = new_simulation.STARTING_BANKROLL;
+    new_simulation.attempts = 0;
+    run(&new_simulation, 2147483647);
+    printf("Starting Bankroll: %f\n", new_simulation.STARTING_BANKROLL);
+    printf("Current Bankroll: %f\n", new_simulation.bankroll);
+    printf("Finished after %d attempts and with a betsize of: %f\n", new_simulation.attempts, new_simulation.betsize);
+    return 0;
+}