C语言指针运行时候堆栈错误，求解决

Question

#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>


/*--- 将px、py所指对象的值进行互换 ---*/
void swap(int* px, int* py)
{
    int temp = *px;
    *px = *py;
    *py = temp;
}

int main(void)
{
    int da, db;

    puts("请输入两个实数。");
    printf("实数A：");  scanf("%lf", &da);
    printf("实数B：");  scanf("%lf", &db);

    swap(&da, &db);

    puts("互换了两数的值。");
    printf("实数A是%f。\n", da);
    printf("实数B是%f。\n", db);

    return 0;
}
运行的时候显示这个错误
Run-Time Check Failure #2 - Stack around the variable 'db' was corrupted.

Answer 1

#include <stdio.h>

/*--- 将px、py所指对象的值进行互换 ---*/
void swap(int* px, int* py)
{
    int temp = *px;
    *px = *py;
    *py = temp;
}

int main(void)
{
    int da, db;

    puts("请输入两个整数。");
    printf("整数A：");  scanf("%d", &da);
    printf("整数B：");  scanf("%d", &db);

    swap(&da, &db);

    puts("互换了两数的值。");
    printf("整数A是%d。\n", da);
    printf("整数B是%d。\n", db);

    return 0;
}