雄鸡7元1只，母鸡5元1只 ，小鸡1元1只。百钱百只。问各有几只？？？

 1 //程序
 2 #include <iostream>
 3 #include<fstream>
 4 
 5 using namespace std;
 6 
 7 int main()
 8 {
 9 
10     int cock, hen, chicken;
11 
12     for (cock = 1;cock <= 13;cock++)
13     {
14         for (hen = 1;hen <= 18;hen++)
15         {
16             if (7 * cock + 5 * hen + (100 - cock - hen) / 3 == 100 && (100 - cock - hen) % 3 == 0)            
//两个条件：钱数100，只数100，小鸡要被3整除
17                 cout << "cock:" << cock << endl << "hen:" << hen <<endl << "chicken:" << 100-cock-hen << endl;
18         }
19     }
20 
21     cin.ignore();
22     cin.get();
23     return 0;
24 }

cock:3
hen:10
chicken:87