c - 程序自动终止，无需等待我的响应。为什么？

<分区>

我正在编写一个将数字输入堆栈的程序，do-while 循环自动完成，无需等待我的响应。因此只获取并显示了一个数据。

#include <stdio.h>
#include <stdlib.h>

struct node
{
    int data;
    struct node *next;
};
typedef struct node NODE;

NODE *top = NULL;

void push(int x)
{
    NODE *p;

    p = (NODE*)malloc(sizeof(NODE));
    p->data = x;
    p->next = top;
    top = p;
}

void display(void)
{
    NODE *t;

    t = top;
    if(t == NULL)
    {
        printf("\nstack is empty");
    }
    else
    {
        while(t != NULL)
        {
            printf("%d ", t->data);
            t = t->next;
        }
    }
}

int main(void)
{
    int m;
    char ans;

    do
    {
        printf("\nEnter the no. to insert in stack: \n");
        scanf("%d", &m);
        push(m);

        printf("\nDo you want to enter more data???\n");
        scanf("%c", &ans);
    } while(ans == 'y' || ans == 'Y'); // here after entering a value for variable 'm', the program terminates displaying the stack with one element.

    display();
    return 0;
}

最佳答案

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