只写了几个主要的操作,销毁,清空等没有写
#include <stdio.h>
#include <stdlib.h>
#define OK 1
#define ERROR 0
#define QUEUE_SIZE 100
typedef int Status;
typedef int ElemType;
typedef struct Qnode
{
ElemType *base;
int front;
int rear;
int count;
} Qnode;
Status Init(Qnode &qq)
{
qq.base = (ElemType*)malloc(QUEUE_SIZE * sizeof(ElemType));
if (qq.base == NULL) return ERROR;
qq.front = 0;
qq.rear = 0;
qq.count = 0;
return OK;
}
Status EnQueue(Qnode &qq, ElemType e)
{
if ((qq.rear + 1) % QUEUE_SIZE == qq.front)
return ERROR;
qq.base[qq.rear] = e;
qq.rear = (qq.rear + 1)%QUEUE_SIZE;
qq.count++;
return OK;
}
Status DeQueue(Qnode &qq, ElemType &e)
{
if (qq.rear == qq.front)
return ERROR;
e = qq.base[qq.front];
qq.front = (qq.front + 1) % QUEUE_SIZE;
qq.count--;
return OK;
}
Status GetTop(Qnode &qq, ElemType &e)
{
if (qq.rear == qq.front)
return ERROR;
e = qq.base[qq.front];
return OK;
}
Staus Destroy(Qnode qq)
{
free(qq.base);
qq.base = NULL;
qq.count = 0;
return OK;
}
int main()
{
Qnode qq;
Init(qq);
int m, i;
printf("how many nums?\n");
scanf("%d", &m);
for (i = 0; i < m; i++)
{
int e;
scanf("%d", &e);
EnQueue(qq, e);
}
int e;
GetTop(qq, e);
printf("%d\n" , e);
for (i = 0; i < m; i++)
{
DeQueue(qq, e);
printf("%d ", e);
}
printf("\n");
system ("pause");
return 0;
}
本文详细介绍了队列数据结构的基本操作,包括初始化、入队、出队、获取队首元素及队列销毁,并通过实例展示了如何使用这些操作进行队列的创建、填充和遍历。
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