linyiyi123456 @ 2023-03-08 14:43:30
#include<stdio.h>
#include<math.h>
#define PRINTF "%lf %lf"
double C(double x1,double x2,double y1,double y2)
{
double sum;
sum=sqrt(pow((x2-x1),2)+pow((y2-y1),2));
return sum;
}
int main()
{
double x1,x2,x3,y1,y2,y3,sum,c1,c2,c3;
scanf(PRINTF,&x1,&y1);
scanf(PRINTF,&x2,&y2);
scanf(PRINTF,&x3,&y3);
c1=C(x1,x2,y1,y2);
c2=C(x2,x3,y2,y3);
c3=C(x3,x1,y3,y1);
sum=c1+c2+c3;
printf("%.2lf",sum);
return 0;
}
by CreutzWilknare @ 2023-03-08 14:46:30
scanf里放%.3lf，给我看木了
by Milthm @ 2023-03-08 15:47:15
@linyiyi123456 scanf或许不是这样用的……
by mashduihca @ 2023-03-08 16:20:48
先不说.3lf，就你一句scanf(PRINTF)就把我看麻了。
by linyiyi123456 @ 2023-03-08 18:10:37
@songjiahao_ 不能这样用么，妈呀，好丢脸，谢谢
by Milthm @ 2023-03-08 18:35:05
@linyiyi123456 等等等等，我或许看错了，这个代码应该是对的啊（？，提交上去可以AC的
by linyiyi123456 @ 2023-03-08 23:23:33
@songjiahao_ 把.3去掉的话是对的，我之前不晓得为什么不可以加.3
by Milthm @ 2023-03-09 18:22:31
@linyiyi123456 scanf里面加类型就可以了，不用加限制
by linyiyi123456 @ 2023-03-09 23:21:00
@songjiahao_ 好的我知道了，谢谢你