Moving Coins

• Problem Description

  
  A triangle can be classified based on the lengths of its sides as equilateral, isosceles or scalene. 
  
  All 3 sides of an equilateral triangle have the same length. 
  
  An isosceles triangle has two sides that are the same length, and a third side that is a different length. 
  
  If all of the sides have different lengths then the triangle is scalene.
  
  Write a program that reads the lengths of 3 sides of a triangle from the user. Display a message indicating the type of the triangle.
  
  

• Test Case 1

  
  Input (stdin)

  120
  
  60
  
  60
  
  

  Expected Output

  isosceles

• Test Case 2

  
  Input (stdin)

  60
  
  60
  
  60
  
  

  Expected Output

  equilateral

Solution

#include <stdio.h>

int main()

{

    int side1, side2, side3;

    scanf("%d%d%d", &side1, &side2, &side3);

    if(side1==side2 && side2==side3) 

    {

        printf("equilateral");

    }

    else if(side1==side2 || side1==side3 || side2==side3) 

    {

        printf("isosceles");

    }

    else 

    {

        printf("scalene");

    }

    return 0;

}