用C语言编写三角形面积

两个数,只可能是底和高吧.
#include
void main()
{
float Side,Height;//底和高
float Space;
printf("please input Side and its Height:\n");
scanf("%f",&Side);
scanf("%f",&Height);
Space = Side*Height/2;
printf("the space is %.2f\n",Space);
}
以上~