# include <stdio.h> # include <malloc.h> typedef struct Queue { int * pBase; int front; int rear; }QUEUE; void init(QUEUE *); //初始化 bool en_queue(QUEUE *, int val); //入队 void traverse_queue(QUEUE *); //遍历输出 bool full_queue(QUEUE *); //判断是否已满 bool out_queue(QUEUE *, int * pVal); //出队 bool emput_queue(QUEUE * pQ); //判断是否为空 int main(void) { QUEUE Q; int val; init(&Q); en_queue(&Q, 1); en_queue(&Q, 2); en_queue(&Q, 3); en_queue(&Q, 4); en_queue(&Q, 5); en_queue(&Q, 6); en_queue(&Q, 7); en_queue(&Q, 8); traverse_queue(&Q); if ( out_queue(&Q, &val) ) { printf("出队成功,出队元素是:%d ", val); } else { printf("出队失败! "); } traverse_queue(&Q); return 0; } void init(QUEUE *pQ) //初始化 { pQ->pBase = (int *)malloc(sizeof(int) * 6); pQ->front = 0; pQ->rear = 0; } bool full_queue(QUEUE * pQ) //判断是否已满 { if ( (pQ->rear+1) % 6 == pQ->front ) return true; else return false; } bool en_queue(QUEUE * pQ, int val) //入队 { if ( full_queue(pQ) ) { return false; } else { pQ->pBase[pQ->rear] = val; pQ->rear = (pQ->rear+1) % 6; return true; } } void traverse_queue(QUEUE * pQ) //遍历输出 { int i = pQ->front; while (i != pQ->rear) { printf("%d ", pQ->pBase[i]); i = (i+1) % 6; } printf(" "); return; } bool emput_queue(QUEUE * pQ) //判断是否为空 { if ( pQ->front == pQ->rear ) return true; else return false; } bool out_queue(QUEUE * pQ, int * pVal) //出队 { if ( emput_queue(pQ) ) { return false; } else { *pVal = pQ->pBase[pQ->rear]; pQ->front = (pQ->front+1) % 6; return true; } }