4.17

#include<stdio.h>
main(){
int cock,hen,chicken;
for(cock=0;cock<=20;cock++)
for(hen=0;hen<=33;hen++)
for(chicken=0;chicken<=100;chicken++){
if((5*cock+3*hen+chicken/3.0==100)&&(cock+hen+chicken==100))
printf("cock=%2d,hen=%2d,chicken=%2d\n",cock,hen,chicken);}
}