队列

#include <stdio.h>struct queue{    int q[100],head,tail;}; int main(){    struct queue q;    int i;     q.head = 1;q.tail = 1,i;    for(i = 1;i <= 9;i++)    {        scanf("%d",&q.q[q.tail]);        q.tail++;    }    while(q.head < q.tail)    {        printf("%d",q.q[q.head]);        q.head++;        q.q[q.tail] = q.q[q.head];        q.head++;        q.tail++;    }    return 0;}

输入
631758924
输出
615947283