软工第4天

1.1

中国古代数学家张丘建在他的《算经》中提出了一个著名的“百钱百鸡问题”:一只公鸡值五钱，一只母鸡值三钱，三只小鸡值一钱，现在要用百钱买百鸡，请问公鸡、母鸡、小鸡各多少只?

#include <iostream>
using namespace std;
int main()
{
    int cock, hen, chicken;
    for (cock = 0; cock <= 20; cock++)
    {
        for (hen = 0; hen <= 33; hen++)
        {
            for (chicken = 0; chicken <= 300; chicken++)
            {
                if ((cock + hen + chicken == 100) &&(5 * cock + 3 * hen + chicken / 3.0 == 100))
                {
                    cout << "公鸡数量" << cock << "母鸡数量" << hen << "小鸡数量" << chicken << endl;
                }
            }
        }
    }
    return 0;
}

1.2

小明有5本新书，要借给A、B、C这3位小朋友，若每人每次只能借1本，则可以有多少种不同的借法?

#include <iostream>
using namespace std;
int main()
{
    int a, b, c, d;
    d = 0;
    for (a = 1; a <= 5; a++)
    {
        for (b = 1; b <= 5; b++)
        {
            for (c = 1; c <= 5; c++)
            {
                if (a != b && a != c && b != c)
                {
                    cout << "A:" << a << "B:" << b << "C:" << c << " ";
                    d++;
                    if (d % 4 == 0)
                    {
                        cout << endl;
                    }
                }
            }
        }
    }
    return 0;
}