作业-4

#include <iostream>
using namespace std;
int main()
{
int x,y,count=0;
double z;
cout<<"公鸡、母鸡、雏鸡购买方案:"<<endl;
for(x=0;x<=20;x++)
for(y=0;y<=33;y++)
for(z=0;z<=100;z++)
if(x*5+3*y+z/3==100&&x+y+z==100)
{
++count;
cout<<count<<"公鸡："<<x<<"母鸡："<<y<<"雏鸡："<<z<<endl;
}
return 0;
}

#include<iostream>
using namespace std;
int main()
{
int i,j;
cout<<"乘法口诀表"<<endl;
for(i=1;i<=9;i++)
{
for(j=1;j<=i;j++)
cout<<j<<"*"<<i<<"="<<j*i<<"\t";
cout;
}
return 0;
}

#include <iostream>
using namespace std;
int main()
{
int i,j,z,n;
for(i=0;i<=3;i++)
for(j=0;j<=3;j++)
for(z=0;z<=6;z++)
if(i+j+z==8)
{
++n;
cout<<"红球有"<<i<<"个"<<"白球有"<<j<<"个"<<"黑球有"<<z<<"个"<<endl;
}
return 0;
}