diff options
Diffstat (limited to 'c')
| -rw-r--r-- | c/wip/205-dice_game.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/c/wip/205-dice_game.c b/c/wip/205-dice_game.c new file mode 100644 index 0000000..c60473d --- /dev/null +++ b/c/wip/205-dice_game.c @@ -0,0 +1,120 @@ +/* + * Dice Game + * + * Problem 205 + * Peter has nine four-sided (pyramidal) dice, each with faces numbered 1, 2, 3, 4. + * Colin has six six-sided (cubic) dice, each with faces numbered 1, 2, 3, 4, 5, 6. + * + * Peter and Colin roll their dice and compare totals: the highest total wins. The + * result is a draw if the totals are equal. + * + * What is the probability that Pyramidal Pete beats Cubic Colin? Give your answer + * rounded to seven decimal places in the form 0.abcdefg + */ + + +#include <stdio.h> +#include <time.h> +#include <stdlib.h> + +int rand_peter(void); +int rand_colin(void); +int rand_range(int lo, int hi); + +int main(void) +{ + srand(time(NULL)); + + int i, j, peter_total, colin_total; + long unsigned int n = 400000; + long unsigned int score = 0; + for (j = 0; j < n; j++) + { + peter_total = 0; + for (i = 0; i < 9; i++) + peter_total += rand() % 4; + + colin_total = 0; + for (int i = 0; i < 6; i++) + colin_total += rand() % 6; + + if (peter_total > colin_total) + score++; + } + + double ratio = (double)score / (double)n; + printf("%.7f", ratio); + return 0; +} + + +// other retarded try + +/* #include <stdio.h> */ +/* #include <time.h> */ +/* #include <stdlib.h> */ +/* */ +/* #define PETER_SIZE (4 * 4 * 4 * 4 * 4 * 4 * 4 * 4 * 4) */ +/* #define COLIN_SIZE (6 * 6 * 6 * 6 * 6 * 6) */ +/* */ +/* void init_peter(int peter[PETER_SIZE]); */ +/* void init_colin(int colin[COLIN_SIZE]); */ +/* */ +/* int main(void) */ +/* { */ +/* int i; */ +/* int peter[PETER_SIZE]; */ +/* int colin[COLIN_SIZE]; */ +/* init_peter(peter); */ +/* init_colin(colin); */ +/* */ +/* long int sum_peter = 0; */ +/* for (i = 0; i < PETER_SIZE; i++) */ +/* sum_peter += peter[i]; */ +/* #<{(| for (i = 0; i < 100; i++) |)}># */ +/* #<{(| printf("%d ", peter[i]); |)}># */ +/* */ +/* long int sum_colin = 0; */ +/* for (i = 0; i < COLIN_SIZE; i++) */ +/* sum_colin += colin[i]; */ +/* */ +/* printf("%d, %d\n", sum_peter, sum_colin); */ +/* printf("%d, %d\n", PETER_SIZE, COLIN_SIZE); */ +/* */ +/* double avg_peter = (double)sum_peter / (double)PETER_SIZE; */ +/* double avg_colin = (double)sum_colin / (double)COLIN_SIZE; */ +/* printf("%f, %f\n", avg_peter, avg_colin); */ +/* */ +/* printf("%.7f", avg_colin / avg_peter); */ +/* */ +/* return 0; */ +/* } */ +/* */ +/* void init_peter(int peter[PETER_SIZE]) */ +/* { */ +/* int j = 0; */ +/* int a, b, c, d, e, f, g, h, i; */ +/* for (a = 1; a <= 4; a++) */ +/* for (b = 1; b <= 4; b++) */ +/* for (c = 1; c <= 4; c++) */ +/* for (d = 1; d <= 4; d++) */ +/* for (e = 1; e <= 4; e++) */ +/* for (f = 1; f <= 4; f++) */ +/* for (g = 1; g <= 4; g++) */ +/* for (h = 1; h <= 4; h++) */ +/* for (i = 1; i <= 4; i++, j++) */ +/* peter[j] = a + b + c + d + e + f + g + h + i; */ +/* } */ +/* */ +/* void init_colin(int colin[COLIN_SIZE]) */ +/* { */ +/* int j = 0; */ +/* int a, b, c, d, e, f; */ +/* for (a = 1; a <= 6; a++) */ +/* for (b = 1; b <= 6; b++) */ +/* for (c = 1; c <= 6; c++) */ +/* for (d = 1; d <= 6; d++) */ +/* for (e = 1; e <= 6; e++) */ +/* for (f = 1; f <= 6; f++, j++) */ +/* colin[j] = a + b + c + d + e + f; */ +/* } */ |