c - 运行时检查失败 #3 - T

Question

我的代码有错误

Run Time Check Failure #3 - T

我尝试了很多次来修复它，但我失败了。我添加了指向 x, y 的指针，但“运行时检查失败#3 - T”——同样的错误。你能帮我解决这个错误吗？

#include<stdio.h>
#include<math.h>    

typedef struct {
    double x, y;
}location;
double dist(location a,location b)
{
    return sqrt(pow(b.x - a.x, 2.0) + pow(b.y -a.y, 2.0));
}
void func(location l, location e)
{
    double z;
    location a = l;
    location b = e;
    printf("enter two dots:");
    scanf("%lf %lf", a.x, a.y);
    printf("enter two dots:");
    scanf("%1",a, b);
    printf("%.2lf", z);

}

void main()
{
    location l;
    location e;
    func(l, e);
}

Answer 1

代码中的问题如下:

1) scanf 变量 args 必须作为指针传递。请参阅下面的 scanf 更改。

2) 初始化结构中的变量 - 这就是运行时检查失败 #3 警告。请参阅下面的位置初始化。

我还简化了一点。希望有帮助。

#include<stdio.h>
#include<math.h>    

typedef struct {
    double x, y;
}location;

double dist(location a, location b)
{
    return sqrt((b.x - a.x) * (b.x - a.x) + (b.y - a.y) * (b.y - a.y));
}

void main()
{
    location start = { 0 };
    location end = { 0 };
    printf("Enter start x, y co-ordinates: ");
    scanf("%lf %lf", &start.x, &start.y);

    printf("Enter end x, y co-ordinates: ");
    scanf("%lf %lf", &end.x, &end.y);

    printf("The distance between start and end: %lf\n", dist(start, end));
}