View Code of Problem 24

#include <stdio.h>
#include <math.h>
int main()
{ 
	int a,b,c;
	float A,p,q;
	while(scanf("%d %d %d",&a,&b,&c)!=EOF)
	{
		p=(float)(a+b+c)/2;
		q=p*(p-a)*(p-b)*(p-c);
		A=sqrt(q);//此处不用再转换类型
		printf("%.2f\n",A);
	}
	return 0;
}

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