dice-variation/Main.c

#include <stdio.h>
#include <stdlib.h>

int* numbers = NULL;
int dices = 0;

void calc(int diceSum, int leftDices) {
    if(leftDices <= 0) {
        numbers[diceSum - dices]++;
        return;
    }
    for(int i = 1; i <= 6; i++) {
        calc(diceSum + i, leftDices - 1);
    }
}

int main(int argAmount, const char** args) {
    if(argAmount < 3) {
        if(argAmount > 0) {
            printf("%s <dices> <print_width>\n", args[0]);
        } else {
            puts("... <dices> <print_width>");
        }
        return 0;
    }
    dices = atoi(args[1]);
    int width = atoi(args[2]);
    if(dices < 1 || dices > 10) {
        puts("dices must be in the range [1, 10]");
        return 0;
    } else if(width < 1 || width > 200) {
        puts("print width must be in the range [1, 200]");
        return 0;
    }

    int range = 6 * dices - dices + 1;
    numbers = calloc(range, sizeof(int));
    calc(0, dices);
    int max = 0;
    for(int i = 0; i < range; i++) {
        if(numbers[i] > max) {
            max = numbers[i];
        }
    }

    const char* format = dices == 1 ? "%d: " : "%2d: ";
    for(int i = 0; i < range; i++) {
        printf(format, i + dices);
        int chars = (numbers[i] * width) / max;
        for(int k = 0; k < chars; k++) {
            putchar('X');
        }
        putchar('\n');
    }

    free(numbers);
    return 0;
}