Question

C语言求两个点之间的距离问题

#include <stdio.h>
#include <math.h>
int main()
{
double x1,y1,x2,y2,l;
printf("请分别输入x1 y1 x2 y2:\n") ;
scanf("%d %d %d %d",&x1,&y1,&x2,&y2);
l=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
printf("答案为%f\n",l);
}

结果出现问题

Answer 1

double 型输入\输出为 %lf。

代码：
#include <stdio.h>
#include <math.h>
int main()
{
double x1,y1,x2,y2,l;
printf("请分别输入x1 y1 x2 y2:\n") ;
scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);
l=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
printf("答案为%lf\n",l);
}

Answer 2

scanf在的%d改成%f试试.

追问

变成%f之后出现这个问题