求解，那弄錯了啊
#include <math.h>#include<stdio.h>
void main()
{
double a,b,c,s,area;
scanf("%f,%,f,%f",&a,&b,&c);
s=(a+b+c)/2;
area=sqrt(s*(s-a)*(s-b)*(s-c));
printf("a=%7.2f,b=%7.2f,c=%7.2f,s=%7.2f\n",a,b,c,s);
printf("area=%7.2f",area);
} double 对应的是 lf
f 是float
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