C言語メモ(三角形面積コード計算)

#include  
#include 
/*    C  ，              ，        ！*/
void main()
{
	while (1)
	{
		void func();
		func();
	}
}

void func()
{
	float a, b, c;
	float s;
	float j, m;
	char z;
	printf("
      |               
      |        a b c   :
");
	printf("      |                =  ");
	scanf_s("%f", &a);
	printf("      |                =  ");
	scanf_s("%f", &b);
	printf("      |                =  ");
	scanf_s("%f", &c);
	printf("      |______________________________________________________________");
	scanf_s("%c", &z);
	//scanf("%f%f%f",&a,&b,&c);  //    
	s = ((a + b + c) / 2);
	j = (s * ((s - b) * (s - c) * (s - a)));//j   
	j = sqrt((float)j); //     
	//   j
	if ((a + b == c) | (a + c == b) | (b + c == a))
	{
		printf("             ！");
	}
	if ((a + b > c) | (a + c > b) | (b + c > a))
	{

		printf("         :%9.2f
      |    @RHJ flash", j);
	}
	if ((a + b < c) | (a + c < b) | (b + c < a))
	{
		printf("      error！！  ！              ！
      |______________________________________________________________");
	}
}