Question

编写一个fun函数,功能是根据给定的三角形三条边长a,b,c,求三角形的面积

Answer 1

include

include

ddouble fun(int a ,int b,int c)

{

int p;

p=(a+b+c)/2;

return sqrt(p*(p-a)*(p-b)*(p-c));

}