C语言中递归的实例

李白打酒

#include <stdio.h>


int count = 0;


void libai(int store, int flower, int alco, int pre, char *ch, int index)
{
if(store == 0 && flower == 0)
{
if (alco == 0 && pre == 0)
{
int i = 0;
for (i = 0; i < 15; i++)
{
printf ("%c", ch[i]);
}
printf ("\n");
count++;
}
return ;
}

if (store > 0)
{
ch[index] = 'a';
libai(store-1, flower, alco*2, 1, ch, index+1);// 1代表碰到的是店
}


if (flower > 0)
{
ch[index] = 'b';
libai(store, flower-1, alco-1, 0,ch, index+1);// 0代表碰到的是花
}

}




void libai2(int alco, int store, int flower)
{
if (store > 5 || flower > 10)
return;

if (store == 5 && flower == 9)
{
if (alco == 1)
count++;
return ;
}
libai2(alco*2, store+1, flower);


libai2(alco-1, store, flower+1);
}


int main()
{

//libai2(2, 0, 0);
char ch[20];
libai(5, 10, 2, -1, ch, 0);

printf ("%d\n", count);

return 0;
}