View Code of Problem 24

# include<stdio.h>
# include<math.h>
int main(void)
{
    float a,b,c,p,s;
    while(scanf("%f%f%f",&a,&b,&c)!=EOF)
    {
        p = (a+b+c)/2;
        s = sqrt(p*(p-a)*(p-b)*(p-c));
        printf("%.2f\n",s);
    }
    return 0;
}