C :

#include<stdio.h>
void main()
{
	int cock=0;				 //公鸡的数量   公鸡5元一只
	int hen=0;			  	 //母鸡的数量	母鸡3元一只
	int chick=0;			 //小鸡的数量	小鸡1元三只

	for(cock=1;cock<20;cock++)      //100块最多买20只公鸡
	{
		for(hen=1;hen<33;hen++)		//100块最多买33只母鸡
		{
			chick=100-cock-hen;
			if(5*cock+3*hen+chick/3==100 && chick%3==0)
			{
				printf("%d %d %d\n",cock,hen,chick);
			
			}
		}
	}
	

   return 0;
}

C++ :

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main(){
     int a,b,c;
     for(a=1;a<=98;a++){
   	      for(b=1;b<=98;b++){
   	    	   for(c=1;c<=98;c++){
   	    	   	    if(a*5+b*3+c/3==100&&a+b+c==100&&c%3==0){
   	    	   	    	 cout<<a<<" "<<b<<" "<<c<<endl;
						  }
				  }
		   }
   }
}

Pascal :

var
  x,y,z:longint;
begin
  for x:=1 to 19 do
  for y:=1 to 31 do
  for z:=1 to 92 do
  if (x+y+z=100) and (x*5+y*3+z/3=100)
                 then writeln(x,' ',y,' ',z);
end.

Java :

public class Main {
			 public static void main(String[] args) {
			        for (int x = 3; x < 100; x = x + 3) { 
			            for (int g = 1; g < 20; g++) {
			                for (int m = 1; m < 33; m++) {
			                    if (x + g + m == 100 && x / 3 + 5 * g + 3 * m == 100) { 
			                        System.out.println( g + " " + m + " " + x);
			                    }
			                }
			            }
			        }
			         
 }
}

Python :

for i in range(1, 100//5 + 1):
   for j in range(1,100 // 3):
     if 100 - i * 5 - j * 3 >= 1 and i + j + 3 * (100 - i * 5 - j * 3) == 100:
        print(i,j,3 * (100 - i * 5 - j * 3))