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

int main(void)
{
    int k, sum = 0, i, Points;
    int Runtimes = 1000;
    float  CardSum = 0, YesSum = 0;

    k = rand()%13 + 1;
    if (k < 11) {
        if ((k == 1)&&(sum <= 21)) k = 11;
        else k = k;
    } else {
        k = 10;
    }

    printf("Points  Probability  #Cards\n");

    for (Points = 4; Points <= 21; Points++){
        for (i = 0; i < Runtimes; i++){
            if (sum < Points){
                sum += k;
                CardSum++;
            }else if(sum == Points){
                YesSum++;
            }
        }
        printf("%4d   %8.2f%%   %7.2f\n", Points, (YesSum/Runtimes), (CardSum/YesSum));
    }
}