IO 3

Problem 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,area,s;
    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\n",area);
       
    
  
   return 0;
  }