[Ｃ++] 期中考古-丟硬幣統計機率

[sb0917 (ＱＱ)]

#include <iostream>
#include <iomanip>
#include <ctime>
using namespace std;

int five_coins();

int main()
{
    srand(time(NULL));

    int i;
    float sum=0;

    for(i=0;i<50000;i++)
    {
        if(five_coins() >= 4)
            sum++;
    }

    cout << "機率為: " << setprecision(3) << fixed
         << 100*sum/50000.0 << "%\n";

    system("pause");
    return 0;
}

int five_coins()
{
    int i,coin,tim;

    tim = 0;

    for(i=0;i<5;i++)
    {
        coin = rand()%2;
        if(coin)
            tim++;
    }

    return tim;
}

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