#include "stdio.h"
#include "stdlib.h"
#define random(num) (rand() % (num)) /* random 取亂數 */
#define randomize() srand((unsigned)time(NULL)) /* randomize 清除取亂數種子表 */
#define clrscr() system("CLS") /* 畫面清除 */
#define pause() system("PAUSE") /* 暫停畫面 */
/*
dist[6] : given distribution of each number's appearances
result[n] : simulation result
n : rolling a dice n times
*/
void rolling(int result[][2], int n) {
int i,c;
randomize();
for(i=0;i<n;i++)
{
result[i][0]=i+1;
result[i][1]=random(6)+1;
}
}
void print(int vals[][2], int len) {
int i;
int cnt[6]={0};
int index;
/* for(i=0; i<6; i++) */
/* cnt[i]=0; */
clrscr();
printf("Rolling result : \n");
for(i=0; i<len; i++) {
printf("(%3d,%2d) ",vals[i][0],vals[i][1]);
/* int index=vals[i][0]-1; */
index=vals[i][1]-1;
cnt[index]++;
}
printf("\n");
for(i=0; i<6; i++) {
printf("\tdice(%d) = %4.1f %%\n",i+1,(double)cnt[i]/len*100);
}
printf("\n");
pause();
}
int main(){
const int n=100;
int dices[n][2];
rolling(dices,n);
print(dices,n);
}
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