母牛的故事 （结构体解决）

解题思路:

注意事项:

参考代码:

#include "stdio.h"

typedef struct shape {

int sum;

int age;

} shape;

int main() {

int i=0,n;

shape shp[4];

scanf("%d",&n);

while(n!=0) {

shp[0].age =4;

shp[0].sum=1;

shp[1].age =3;

shp[1].sum=0;

shp[2].age =2;

shp[2].sum=0;

shp[3].age =1;

shp[3].sum=0;

for(i=1; i<n; ++i) {

shp[0].sum+=shp[1].sum;

shp[1].sum=shp[2].sum;

shp[2].sum=shp[3].sum;

shp[3].sum=shp[0].sum;

}

printf("%d ",shp[0].sum+shp[1].sum +shp[2].sum +shp[3].sum );

scanf("%d",&n);

}

return 0;

}