[C++] 丟骰子範例程式碼 使用if…else統計

#include <iostream>
#include <cstdlib> //引入才能夠使用rand()函數
#include <ctime> //引入才能夠使用time()函數
using namespace std;

int main()
{
double num;

cout << "請問骰子要丟幾次？ ";
cin >> num; //等待使用者輸入一整數
cout << endl; //換行

srand(time(NULL)); //設定亂數種子，需要#include <ctime>

double one=0,two=0,three=0,four=0,five=0,six=0; //各點數數目變數

for(int n=1;n<=num;n++)
{
int dicenum=rand()%6+1;  //將骰子點數指定給dicenum變數

if(dicenum==1)  //如果dicenum等於1
{
one++;
}
else if(dicenum==2)
{
two++;
}
else if(dicenum==3)
{
three++;
}
else if(dicenum==4)
{
four++;
}
else if(dicenum==5)
{
five++;
}
else if(dicenum==6)
{
six++;
}
}

cout << "以下是丟骰子結果統計：" << endl
<< "1點：" << one << " 百分比:" << 100*one/num << "%" << endl //輸出一點的數目，並且計算佔總數的百分比
<< "2點：" << two << " 百分比:" << 100*two/num << "%" << endl
<< "3點：" << three << " 百分比:" << 100*three/num << "%" << endl
<< "4點：" << four << " 百分比:" << 100*four/num << "%" << endl
<< "5點：" << five << " 百分比:" << 100*five/num << "%" << endl
<< "6點：" << six << " 百分比:" << 100*six/num << "%" << endl;

return 0;
}