To find the area of the triangle.

#include<stdio.h>

#include<math.h>

void main()

{

  

    float a,b,c,s,area,k;

    printf("enter the three sides of triangle");

    scanf("%f%f%f",&a,&b,&c);

    s=(a+b+c)/2;

     k=s*(s-a)*(s-b)*(s-c);

     if(c<0)

     {

         printf("complex no");

     }

     else

    {

        area=sqrt(c);

    }

    printf("area of triangle is %f",area);

}