View Code of Problem 24

#include<stdio.h>
#include<math.h>
void main(){
	double a,b,c,d,s;
  	scanf("%lf %lf %lf",&a,&b,&c);
  	if(a+b>c&&a+c>b&&b+c>a)
        {
        	d=(a+b+c)/2;
          	s=sqrt(d*(d-a)*(d-b)*(d-c));
          printf("%lf",s);
        
        }

}

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