#include <stdio.h>
#include <math.h>
int main(int argc, char *argv[])
{
double x1,x2,y1,y2,c;
scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);
c=sqrt(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
printf("%.5f",c);
    return 0;
}
求大佬看看我这段代码 是哪里不符合这个图片里的条件

c=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));