IO 3

Description:

Write a program to calculate the perimeter of a triangle using Heros formula Use the Following Formula: s = (a+b+c)/2 area = sqrt(s*(s-a)*(s-b)*(s-c)) Input and Output Format: Refer sample input and output for formatting specification. All float values are displayed correct to 2 decimal places. All text in bold corresponds to input and the rest corresponds to output. Test Case 1 Input (stdin) 2.0 3.0 4.0 Expected Output perimeter of triangle is=2.904737 Test Case 2 Input (stdin) 3.4 5.6 7.9 Expected Output perimeter of triangle is=8.178576

Program :

#include <stdio.h>
#include<math.h>
int main()
{
float a,b,c,s,area;
  scanf("%f%f%f",&a,&b,&c);
  s=(a+b+c)/2;
  area=sqrt(s*(s-a)*(s-b)*(s-c));
  printf("perimeter of triangle is=%f",area);
 return 0;
}